Cooked Yield Shrinkage Calculator

Introduction

A kitchen buys food in one form and sells it in another. A case of raw product may include peel, bone, rind, fat, stems, liquid, damaged pieces, or packaging that never reaches a plate. Heat can drive off water and rendered fat, while soaking, brining, saucing, or starch hydration can add weight. Cooked yield turns those physical changes into numbers that support menu pricing, batch planning, and purchasing.

The key distinction is between as-purchased weight and cooked edible weight. As-purchased weight, often shortened to AP, is the amount bought before trimming or cooking. Cooked edible weight is the portionable product after the kitchen's normal finishing point, such as draining, resting, slicing, pulling, chilling, panning, or packing. Shrinkage is the AP weight that does not remain in that finished product.

Trim loss

Waste removed before cooking, such as bone, peel, rind, fat cap, stems, or unusable ends.

Cooking change

Weight lost or gained between ready-to-cook product and finished edible product.

Finished yield

The cooked product available for portions, recipe batches, trays, sandwiches, containers, or service pans.

Yield matters because the finished food carries the full purchase cost. A roast bought at $12 per kilogram is not $12 per cooked kilogram if only 62% remains after trim and cooking. The same cost logic applies to barbecue, roasted poultry, vegetable sides, commissary prep, school meal production, catering quotes, and any menu item where the bought form differs from the served form.

A useful yield record keeps weighing points consistent. A brisket weighed before resting is not comparable with one weighed after slicing and holding. Vegetables drained after steaming are not the same as vegetables served with retained sauce. Added liquid should count only when it is sold or portioned with the food. Food-safety choices, recipe quality, and service standards still need separate judgment; yield arithmetic only explains the measured mass and cost flow.

How to Use This Tool:

Use one measured batch as the reference, then scale the result into portion cost or next-batch purchasing.

1. Choose a Yield test preset that resembles the product, such as roast beef, smoked brisket, roasted poultry, cooked vegetables, or custom.
2. Enter As-purchased weight before trimming, deboning, peeling, cooking, draining, or portioning. Each weight field can use its own unit.
3. Enter Trim waste weight for pre-cook waste. Use zero when the item goes directly from purchase weight to cooking.
4. Enter Cooked edible weight at the same finishing point the kitchen uses for service, packing, or portioning.
   Do not include the pan, discarded bone, drained liquid, or holding loss unless that material is part of the served product.
5. Set Cost entry to supplier cost per AP unit or Total batch cost, then enter the cost value and currency symbol.
6. Add Cooked portion size and Target portions to plan. Portion Cost prices the measured batch, while Purchase Plan back-solves the raw AP amount for the next run.
7. Open Advanced for a batch label, purchase reserve, pack-size round-up, or Target food cost menu-price check. Fix any validation message before relying on the yield ledger or exports.

Interpreting Results:

Cooked yield is the headline percentage. It shows how much of the AP batch remains as finished edible product. Total shrink reads the same relationship from the other direction, showing the AP weight that did not remain after trim and cooking.

Preset yield warnings are review cues, not automatic failures. Smoked meat can legitimately fall below a roast range, and a cooked vegetable batch can gain weight when absorbed water or retained sauce is part of service. Use Yield Ledger to see whether trim waste, cooking change, or finished weight is driving the result.

• True cooked cost per unit rises when yield falls because the same purchase cost is spread across fewer cooked units.
• Cost per cooked portion depends on cooked portion size and finished edible weight, not raw purchase weight.
• Recommended AP purchase uses measured cooked yield, purchase reserve, and optional pack-size round-up for a future batch.
• Menu price at target food cost is a food-cost-only estimate before labor, overhead, packaging, tax, delivery fees, and margin rules.

Technical Details:

Cooked yield is a mass-balance calculation. AP weight is the starting mass, trim waste is removed before cooking, and cooked edible weight is the finished mass that carries the batch cost. All entered weights are converted through grams for calculation, then displayed in the selected units so mixed-unit entry does not change the arithmetic.

Trim loss and cooking change use different denominators because they happen at different stages. Trim loss is measured against AP weight. Cooking change is measured against ready-to-cook weight after trim has already been removed. Separating those stages helps distinguish a purchasing or prep issue from a cooking, resting, draining, or holding issue.

Formula Core:

A 10 kg roast batch with 0.8 kg trim leaves 9.2 kg ready to cook. If the cooked edible weight is 6.2 kg, cooked yield is 62.0% and total shrink is 38.0%. At $12 per AP kilogram, the $120 raw batch cost becomes about $19.35 per cooked kilogram because the finished product carries the full purchase cost.

The purchase plan reverses the measured yield. Eighty 170 g cooked portions need 13.6 kg cooked product. At 62.0% cooked yield, the kitchen needs about 21.94 kg AP before reserve. A 5% reserve raises the recommendation to about 23.03 kg before any supplier pack-size round-up.

Accuracy Notes:

Yield arithmetic is only as good as the weighing process. It does not replace food-safety rules, quality checks, vendor specifications, recipe testing, or menu-pricing policy.

• Use the same scale, tare practice, container handling, drain point, and finishing point across tests.
• Compare suppliers only when cut, grade, trim spec, fat level, form, and cooking method are similar.
• Reserve affects the future purchase plan only. It does not change the measured yield from the completed batch.
• The target food cost value is bounded for calculation, but real menu price also needs labor, overhead, waste, packaging, and business margin.

Worked Examples:

Roast beef production test

A kitchen buys 10 kg of roast beef at $12 per kilogram, trims 0.8 kg, and records 6.2 kg of cooked edible roast after resting and slicing. Cooked yield is 62.0%, Total shrink is 38.0%, and True cooked cost per kg is about $19.35. With a 170 g cooked portion, Cost per cooked portion is about $3.29.

Brisket below the preset band

A 6 kg smoked brisket batch with 0.45 kg trim and 3.1 kg cooked edible meat returns 51.7% cooked yield, which sits inside the smoked brisket review band. If a future batch drops below the band, check trim waste, drain point, drippings, and holding loss before changing menu price.

Vegetables with retained liquid

An 8 kg vegetable batch trimmed to 7.4 kg and finished at 7.8 kg shows cooking gain after trim. The gain can be valid when sauce or absorbed liquid is served with the vegetables. If the liquid is drained before service, re-enter Cooked edible weight after draining.

Planning a larger batch

If the roast test produces about 36.5 cooked portions but the next service needs 80, Recommended AP purchase uses the measured 62.0% yield. With a 5% reserve and no pack round-up, the plan calls for about 23.03 kg AP.

FAQ:

Glossary:

AP weight

As-purchased weight before trim, cooking, or yield loss.

Cooked edible weight

The finished usable product at the point the kitchen portions, packs, or serves it.

Trim loss

Pre-cook waste removed before the product is ready to cook.

Cooking change

Weight lost or gained between ready-to-cook weight and cooked edible weight.

Cooked yield

Cooked edible weight divided by AP weight.

Total shrink

The share of AP weight that does not remain as cooked edible product.

References:

• Food Buying Guide for Child Nutrition Programs, USDA Food and Nutrition Service.
• Meats/Meat Alternates, USDA Food and Nutrition Service.
• Vegetables, USDA Food and Nutrition Service.
• Fruit and Vegetable Prices Documentation, USDA Economic Research Service.