The Crunch at the Edge of the Plate: What Eating Insects Could Change

Inspired by: “Grub” by Dana Goodyear, The New Yorker (September 6, 2021)

The Crunch at the Edge of the Plate

Most of us inherit a quiet rulebook about what counts as food. Milk, yes. Mealworms, no. Yet across much of the world, insects are seasonal staples—harvested, cooked with pride, and folded into celebrations. “Grub” follows the people trying to bring that reality to Western plates, and it opens a wider systems question: when we change what we eat, what else shifts—ecologically, economically, culturally, and even linguistically?

Prevalence, Then and Now

Entomophagy isn’t a fringe experiment; it’s a durable human pattern. From chapulines (Mexico) to mopane worms (southern Africa), palm weevil larvae (Southeast Asia and West Africa), and silkworm pupae (East Asia), insect foods anchor local calendars and economies. In the West, the last 25 years have moved insects from “dare snack” to ingredient: finely milled powders blended into tortillas and pasta, protein bars, extrusion‑friendly oils, frass as a soil amendment, and pet foods and aquafeeds. Adoption looks less like a sudden swerve and more like quiet normalization: better taste, cleaner labels, fewer headlines, more SKUs.

What Bug‑Eating Cultures Share

Across regions, the common threads are striking: seasonality (harvest at peak), locality (tied to specific habitats), whole‑animal thrift (little waste), and sociality (dishes that travel through families and festivals). These foods persist because they’re delicious and woven into belonging. The goal isn’t to wow or provoke; it’s to make insect foods feel at home in local kitchens, schools, and shops.

The Paradox: We Poison What We Might Eat

Modern supply chains spend immense effort killing insects—on fields, in storage, in homes—to prevent crop loss and contamination. That remains necessary in many contexts, yet it also reveals a blunt default: “if it crawls, kill it.” A more precise frame distinguishes harmful contexts from beneficial ones and asks where clean, traceable by‑products could be safely rerouted into controlled insect farming rather than into landfill methane.

Bug Damage and Perishables

Storage pests can devastate grains and seeds; field pests can collapse yields. That’s why post‑harvest design matters: drying, hermetic storage, cold chains, and rapid transport. The same design intelligence that shields food can also cultivate it: modular insect units near food hubs can turn predictable side‑streams (such as brewery spent grain or fruit pomace) into stable protein and oil—reducing losses while adding value.

The Resource‑Savings Hypothesis (Without the Hype)

Insects can be raised vertically, on compact footprints, sometimes on clean, traceable food‑processing leftovers (like brewery spent grain or fruit pomace). That suggests possible wins: less land per unit protein, lower water for certain species, and tighter waste loops. Those savings aren’t automatic; they depend on species, feedstock purity, energy sources, climate control, logistics, and scale. Judge sustainability by the whole system—from feed and energy to transport and waste—not by the label on the final product.

How Much Conventional Protein Could Be Replaced?

Think by segment, not slogan. Credible displacement zones include fortified staples, pet foods and aquafeeds, specialized human nutrition, and some culinary dishes. For staples, think small, evidence‑based additions using micronized insect flours (not whole insects): roughly 5–10% (w/w) in tortillas and noodles/pasta, and ~5% (up to ~10%) in breads—levels that lift protein quality while keeping taste/texture close to control; above ~10–15% you may see darker color and firmer crumb or flavor shifts.

Whole‑form dishes (intact insects) are a different lane: you don’t measure by percent of flour; you plate them like any other whole ingredient—toppings, fillings, sautés, fritters—led by cuisines that already cook them.

Costs, Prices, and Where Savings Appear

Costs go down when farms set up next to steady supplies of clean food‑processing leftovers, use simple automation to feed and harvest, keep air and temperature steady (and reuse heat), and sell to buyers who care about nutrition and reliability—not novelty. Downstream, schools and hospitals can run small pilots to see whether adding a little insect flour (about 5–10%) improves nutrition without raising the per‑meal price.

New Products and Co‑Products

The near‑term story is ingredients and co‑products: protein flours for baking and extrusion, oils for texture and feeds, chitin/chitosan for biodegradable films, wound dressings, and water treatment, and frass as a predictable soil amendment. “Bioactives” here means insect‑derived ingredients that do something useful—like silk proteins that form breathable films for serums or biodegradable plastics; antimicrobial peptides used for odor‑control and surface coatings; or black soldier fly oils rich in lauric acid used in soaps and shampoos. Selling more than one product—protein flour, pet‑food ingredients, frass fertilizer, and chitin/chitosan—makes the business steadier if any single market slows, and it opens doors to partners outside food, like farmers, packaging makers, cosmetics brands, and local waste programs.

Arthropods We Already Eat—and the Bridge to “Bugs”

Western eaters already accept many arthropods from the sea (shrimp, crab, lobster). The real gap is land insects and visibility. Foods made with ground insect flour are easier to accept than dishes with whole, visible insects. So match species to use: crickets and mealworms → finely ground flours for breads, tortillas, and pasta; black soldier fly larvae → pet food, aquafeed, and extracted oils; whole‑insect dishes → led by cuisines that already cook them—credited and compensated.

The Historical Playbook for “New” Foods

Tomatoes were once feared, lobster was prison fare, and sushi was a hard sell. The adoption playbook repeats: trusted guides (chefs, aunties, school cooks), consistent quality and safety, clear names, repetition without pressure, and formats that feel familiar. Rebranding alone never works; lived experience does.

Solving the “Small Size” Problem (Design, Not Magic)

Handling millions of tiny animals is a logistics puzzle. The fix is manufacturing design: uniform bins, automated feeding and harvest, clean‑in/clean‑out lines, rapid kill steps, on‑site milling to stable powders, and batch‑control traceability. Think poultry in miniature—shorter cycles, more batches, tighter biosecurity, and fewer heavy‑equipment hazards.

Language, Norms, and the Early‑Exposure Window

Food norms behave like languages: easiest to adopt when we’re young and curious. Classroom tastings (with clear labeling and opt‑ins), cooking demos, and stories that connect insects to place can build comfort the way bilingual classrooms build confidence. Words matter: “cricket flour” vs. “Acheta powder” vs. “chapulines” signal different audiences and levels of respect. A simple rule: use the real names and credit the cooks.

Materials Handling vs. Large Livestock

Insect farming shifts hazards: less risk of large‑animal injuries, more focus on air quality, dust, sanitation, and temperature/humidity control. Worker dignity is part of sustainability: PPE, ventilation, ergonomic handling, and predictable shifts. Humane handling matters too—quick, low‑stress kill methods and cleanliness, even when consumer empathy is low.

Allergies and Cross‑Reactivity

Chitin and certain proteins may cross‑react with shellfish allergies. That’s not a deal‑breaker; it’s a labeling and education job—akin to nuts, gluten, and dairy. Clear warnings, consistent standards, and clinician guidance protect consumers and credible producers alike.

Equity, Credit, and Naming

Use the real names and credit the cooks. If a dish is chapulines, say “chapulines (Oaxacan toasted grasshoppers),” not a vague “protein crisps.” When adapting recipes or techniques, cite the source community on the package or menu, pay for it via fair sourcing or licensing, and keep the story intact. Avoid euphemisms (“novel protein”) that hide origin or erase culture.

A Simple, Checkable Calculator

Purpose: turn big claims into numbers that buyers and policymakers can verify. Here’s a step‑by‑step plan you can adapt to any city or district.

1) Define the goal (what are you swapping and where). Example: Replace 10% of the protein in district tortillas with cricket flour for one school year.

2) Inventory local inputs (what you’ll feed the insects). List clean, pre‑consumer leftovers within ~50 miles (spent grain, fruit pomace), with tons/year, seasonality, and who controls them.

3) Choose species and process (how you’ll raise them). Pick cricket/mealworm/BSF and note target temp/humidity, batch length, density, and any automation. Record the electricity/heat source (grid mix, renewables).

4) Convert inputs to outputs (the basic math). Feed in (kg) → live biomass (kg) using pilot or vendor yields. Live biomass × dry‑matter % × protein % → protein (kg). Capture co‑products: oil (kg) and frass (kg).

5) Track resources and safety. Energy (kWh/thermal), water (L), labor hours, PPE/ventilation needs, and transport miles for feed coming in and products going out. Note allergen controls (labeling, cleaning).

6) Do an apples‑to‑apples comparison. Against the current protein, compare per kg of delivered, usable protein: land, water, energy, GHG, worker exposure, transport miles, and compliance steps.

7) Price it. CAPEX [1] (one-time purchases like rearing racks, bins, HVAC, milling/defatting equipment, and automation) amortized over useful life; OPEX (recurring): labor, energy, feed prep, QA/compliance, packaging, transport, maintenance, insurance.

8) Pilot design for kitchens/buyers. Specify inclusion rate (e.g., 5–10% by flour weight), batch sizes, QA checks (taste, texture, color), and a plan for opt‑in allergen communication.

9) Sensitivity tests. Vary the key drivers (±25%): energy price, feed availability/quality, yield, labor, and demand. Note where the model stops making sense.

10) Publish the worksheet and footnotes. Share the spreadsheet with cells, assumptions, data sources, and contact names so others can audit or reuse it.

Mini example: Replacing 10% of tortilla flour in a district that makes 1,000,000 tortillas/year means blending about 5–10% insect flour by weight into the dough. The calculator will show the added protein per tortilla, any per‑meal cost change, and whether energy, transport, or labor is the main driver.

Historical Lens (25 Years)

A generation ago, edible insects sat at the fringes of Western food culture—museum gift shops, TV stunts, a chef’s one‑night dare—more spectacle than supply chain. There were few producers, no shared standards, and almost no serious buyers. The conversation was anthropological (“people elsewhere eat bugs”) rather than operational (“who will mill, label, and deliver on Tuesday?”).

Momentum shifted in the early 2010s after the U.N. Food and Agriculture Organization (FAO) published a widely cited report arguing that insects could play a role in food and feed systems. That report gave the space legitimacy, drew researchers, chefs, and investors to the table, and turned a novelty into a hypothesis worth testing. Startups began making cricket flours and bars; chefs moved from shock to craft; and first pilots appeared in pet food and aquaculture, where performance matters more than presentation. Early life‑cycle assessments arrived—imperfect, but enough to guide better questions.

By the early 2020s, the work looked less flashy and more practical. Milling and defatting improved texture; micronized flours blended cleanly into tortillas, noodles, and breads at small inclusion rates; labels and safety practices got clearer; and regulators in the U.S. and Europe issued more specific guidance and the first authorizations, which steadied buyers’ nerves. Hospitals and school districts began small, opt‑in trials to see if a 5–10% blend could lift protein quality without breaking budgets. Meanwhile, materials science pushed beyond food: chitin/chitosan found uses in biodegradable films, wound care, and water treatment, and frass matured from “waste” to a predictable soil amendment.

Where we are now, the frontier isn’t a headline—it’s routine excellence: taste you don’t have to notice, labels you can trust, a supply you can schedule, and contracts that make municipal waste‑diversion loops financially sensible. The long game is normalization, not mythmaking: insects as one more tool in the kit—useful in some places, unnecessary in others—judged by clear numbers and respectful storytelling rather than hype.

Unintended Consequences to Watch

Energy creep: poorly designed climate control can quietly dominate the footprint; biosecurity: high densities can create disease dynamics—prevention beats cure; monoculture risk: chasing a single species at scale can repeat the mistakes of industrial agriculture; market displacement: ensure small producers aren’t crushed by big‑capital entrants; narrative drift: “insects will save the planet” invites backlash, while “insects can help in specific niches” earns trust.

Interconnectedness & Balance

Insects aren’t a silver bullet for climate or hunger. But as one thread in a more diversified food web, they can add redundancy and resilience—absorbing clean side‑streams, providing targeted proteins, and expanding our imagination of what nourishment can be. Balance means matching species to place, feed to local by‑products, scale to community benefit, and story to respect.

Sidebar: Design Patterns for Ethical Scale

Start with location. Site farms next to steady, clean side‑streams so trucks aren’t hauling heavy, wet inputs across town. Less transport means lower costs, fewer emissions, and fresher feed. Design for clean energy from day one: use renewable electricity where possible, reclaim process heat from warm rooms, and insulate well so temperature stays steady without constant spikes in demand.

Build worker‑first lines. Air quality and dust are the real hazards here, not large animals. Give people ventilation, masks when needed, ergonomic bins and tools, and predictable shifts. Treat humane handling as a standard operating procedure, not a marketing add‑on: fast, low‑stress kill methods; clean conditions; and checks that keep animal welfare real even when empathy is low.

Share value with origin. If you’re selling whole‑dish lines inspired by chapulines or mopane worms, contract with the source communities. License recipes, share IP, and split profits. Finally, publish life‑cycle and safety data in plain language—what you fed, what you used, what you saved—so neighbors, buyers, and regulators can see the system working, not just the label.

Sidebar: Allergy & Safety Card (for Schools and Clinics)

· Front of pack should say it plainly: “Contains insect‑derived ingredients; possible cross‑reactivity with shellfish.” Add a QR code to a clinician‑vetted FAQ that explains who should avoid the product and why.

· In cafeterias, use visible signage and offer opt‑in tastings. Treat incidents like you would for nuts or gluten: dedicated utensils and surfaces, cleaning protocols, and a simple escalation plan (nurse, parent contact, report). The point isn’t to make insects risky—it’s to make them ordinary in the way other allergens are ordinary: known, labeled, and managed with care.

Classroom Prompts

1) Map a zero‑waste pilot: identify two local side‑streams, one insect species, and two products (one food, one non‑food). Present a one‑page ops plan.

2) Language matters: test “cricket flour” vs. “Acheta powder” vs. “chapulines.” How do names change acceptance? Why?

3) Debate: Resolved—district schools should pilot an insect‑fortified snack with opt‑in consent. Write a procurement brief.

4) Research sprint: choose a traditional insect dish. Who cooks it, when, and why? Propose a respectful modern adaptation and credit the source community.

Potential Sponsors (Certified B Corps)

Placeholder for future outreach—sustainable food producers, circular‑economy innovators, and education nonprofits aligned with science literacy. (We’ll populate this if/when you activate sponsorships.)

Closing Thought

The most durable food revolutions don’t arrive as crusades; they arrive as better routines—recipes that taste good, supply chains that waste less and pay fairly, labels that inform without condescension, and stories that give credit where it’s due. If edible insects are to matter, it won’t be because they shocked us; it will be because they quietly started making sense.

By-the-Numbers: 2025 snapshot & 2030 scenarios (plain-English)

This section turns big claims into understandable numbers. It shows what people are eating now, where the industry could be by 2030, and what it would cost—in money and resources—if we replaced insect-based foods with conventional proteins instead.

Two quick decoding notes up front: (1) “w/w” means by weight (e.g., 10% w/w = 10 g insect flour per 100 g total flour), and (2) BSF stands for Black Soldier Fly (Hermetia illucens), a workhorse species raised mainly for feed and oils.

Today’s scale (order-of-magnitude): People likely eat tens of thousands of tonnes of insects annually (mix of wild harvest and farmed), while the broader industry (food + feed + co‑products) already reaches the hundreds of thousands of tonnes worldwide.

2030 defensible range: A people-focused estimate lands around 0.26 million tonnes of edible-insect products; an all-products estimate (food + feed + co‑products) rises toward ~3.1 million tonnes. The truth in any region will depend on regulations, energy prices, and whether buyers choose human food, pet food, or aquafeed first.

Replacement—money view (protein‑equivalent): In 2025, commodity soymeal often costs $300–$400 per tonne, while insect meals are commonly several thousand dollars per tonne. That means soy is far cheaper per unit of protein today. Fishmeal—a premium marine protein—sits around $1,400–$1,600 per tonne, typically cheaper than current insect meal, but it depends on wild-fish supply. As scale and automation improve, insect meal prices should fall, though they are still expected to remain above soy in most scenarios.

Replacement—resource view (protein‑equivalent): Well‑designed insect farming can use far less land per kilogram of edible protein than beef, pork, or chicken, and can upcycle clean food‑processing leftovers into protein and oils. That land and circularity advantage is why insects can make sense even when the per‑tonne price is higher—especially if farms sit next to steady side‑streams and run on low‑carbon energy.

Worked example (illustrative): Suppose a district currently uses 300,000 tonnes of insect products in total (food + feed + co‑products). At ~60% protein, that’s ~180,000 t of protein. To replace that protein with soymeal (48% protein) would require ~375,000 t of soymeal—spending roughly $113–$150 million at 2025 prices, and shifting demand back onto cropland. Replacing it with fishmeal (65% protein) would take ~277,000 t at roughly ~$400 million (price varies), while exposure to wild-fish supply and marine impacts increases. The point isn’t that insects “win” everywhere—it’s that they can win on land and circularity, and sometimes on cost, in the right niches (pet food, aquafeed, clinical blends) as the sector scales.

Kitchen‑level practical: For everyday foods, use insect ingredients as finely ground flours at small, tested inclusion rates that keep taste and texture familiar: ~5–10% (w/w) in tortillas and noodles/pasta; ~5% (up to ~10%) in breads. These are flour‑blends, not whole insects. Whole‑form dishes are led by cuisines that already make them—credit and compensate those communities.

Glossary (quick reference)

· w/w (by weight): A percentage measured by mass. 10% w/w means 10 g per 100 g of the total mixture.

· BSF / BSFL: Black Soldier Fly / Black Soldier Fly Larvae (Hermetia illucens), widely farmed for feed, oils, and frass.

· Inclusion rate: The share of insect flour in a flour blend (by weight) for breads, tortillas, noodles, etc.

· Pre‑consumer leftovers: Clean, traceable food‑processing by‑products (e.g., brewery spent grain, fruit pomace)—not plate scrapings.

· Frass: Insect manure plus shed exoskeletons; used as a mild fertilizer/soil conditioner.

· Chitin / Chitosan: Natural polymers from insect shells; used in biodegradable films, wound dressings, water treatment.

· CAPEX / OPEX: One‑time capital costs (build‑out, equipment) vs. ongoing operating costs (labor, energy, maintenance, compliance).

· Edible protein vs. product weight: Many products are blends; compare impacts per kg of edible protein for fair “apples‑to‑apples” analysis.

· LCA (Life‑Cycle Assessment): A method that counts impacts across the whole chain—inputs, farming, processing, transport, use, and waste.

Sources (selected, for the By‑the‑Numbers section)

FAO (2013). Edible insects: Future prospects for food and feed security. (Open‑access report) https://www.fao.org/4/i3253e/i3253e.pdf

IPIFF (2021). The European market of insects as feed—aspiration of 1 million tonnes of insect meal by 2030 (conditions apply). https://ipiff.org/wp-content/uploads/2021/04/Apr-27-2021-IPIFF_The-European-market-of-insects-as-feed.pdf

World Bank (2025). Commodity Price Data (Pink Sheet)—Soybean meal, 48% protein (FOB Rotterdam). https://thedocs.worldbank.org/en/doc/18675f1d1639c7a34d463f59263ba0a2-0050012025/related/CMO-Pink-Sheet-September-2025.pdf

FRED (2025). Global price of Fish Meal (PFISHUSDA). https://fred.stlouisfed.org/series/PFISHUSDA

Oonincx et al. (2012). Environmental impact of the production of mealworms as a protein source for humans—LCA (PLOS One). https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0051145

Mopane worm commercial trade estimate (~16,000 t/yr, South Africa). ScienceDirect overview articles summarize recent figures. https://www.sciencedirect.com/science/article/pii/S2666833524001448 ; https://www.sciencedirect.com/science/article/abs/pii/S1389934115300423

BSF sector scale reference (2023 total products ~332,000 t; industry estimate). https://www.sciencedirect.com/science/article/pii/S2666833525000553

Context on chapulines abundance vs. harvest (Mexico). Wired summary referencing academic work. https://www.wired.com/2015/03/well-eat-grasshoppers-once-know-raise/

Is Waste Diversion the Biggest Societal Benefit? (Short Answer: Often, but not always)

In many cities and food‑processing hubs, yes—the largest upside often comes from diverting clean, local by‑products (spent grain, fruit pomace, bread returns) into controlled insect farming instead of landfilling or long‑haul disposal. That can cut methane risk, reduce truck miles and tipping fees, and turn low‑value leftovers into higher‑value protein, oils, and frass.

But context matters. In coastal regions where aquaculture or poultry operations rely on fishmeal, the bigger win may be replacing a portion of that marine protein with insect meal—reducing pressure on forage fisheries. In deforestation frontiers, the headline benefit may be lower land demand per kilogram of edible protein compared with beef or pork. And in communities with limited economic options, the most meaningful benefit can be dignified local jobs in clean, small‑footprint facilities.

So: waste diversion is a powerful lever where side‑streams are abundant and nearby, and where energy is low‑carbon. Elsewhere, the top benefit may be fishmeal displacement, land‑use relief, or local livelihoods. The calculator in this essay helps you test which benefit dominates in your region.

Notes & Clarifications (for the main text)

· On live eating: In a few traditions—most notably palm‑weevil grubs and bee brood—people sometimes eat insects raw or even alive; but in most modern settings, insects are cooked or milled to flour for safety and texture.

· On whole‑animal thrift: Because we eat most of the insect, the edible fraction is roughly ~80% (vs. ~55% for chicken/pork and ~40% for beef), which means less waste and more options to use co‑products like chitin and frass.

Glossary (addendum)

· GHG: Greenhouse gas emissions (e.g., CO₂, CH₄, N₂O). Reported as CO₂e—carbon‑dioxide equivalents that normalize gases by their global‑warming potential. Typical units: kg CO₂e or t CO₂e per functional unit (e.g., per kg edible protein).

Units (quick reference)

· L: liter (volume). 1 L ≈ 0.264 US gal.

· kg: kilogram (mass). 1 kg ≈ 2.205 lb.

· t: metric tonne (1,000 kg). 1 t ≈ 2,204.6 lb (≈1.102 short tons).

· kWh: kilowatt‑hour (energy). Common for electricity use.

· MJ: megajoule (energy). 1 kWh = 3.6 MJ.

· CO₂e: carbon‑dioxide equivalent. Used to express total GHG impact as a single number.

· w/w: by weight. A 10% w/w inclusion = 10 g per 100 g of the total mix.

· km / mi: kilometer / mile. 1 km ≈ 0.621 mi.

· °C / °F: degrees Celsius / Fahrenheit. °F = (°C × 9/5) + 32.

Notes (for the Calculator Section)

Footnote [1]: CAPEX = capital expenditures—one-time purchases that create long-lived assets (e.g., rearing racks, bins, HVAC, milling/defatting equipment, automation). OPEX = operating expenditures—recurring costs to run the facility (labor, energy, feed preparation, QA/compliance, packaging, transport, maintenance, insurance).