Recipe scaling and portions
Ingredient Edible Portion Calculator
Turn an as-purchased ingredient weight into usable edible weight after trim, peel, bone, shell, or other waste.
Record purchase and trim weights
From purchase weight to edible food
Method basis: Edible weight equals received weight less measured trim, and yield is expressed against received weight.
Defining trim consistently
Edible yield depends on purchasing specification and kitchen technique. A whole fish, dressed fish, and boneless fillet must not share one assumed percentage.
Measure trim under ordinary production conditions rather than an unusually careful demonstration. Several batches produce a stronger planning factor than a single ingredient.
Some trim is usable elsewhere. The calculation classifies it as outside this recipe's edible portion, not necessarily as trash.
A ten-kilogram trim example
This scenario starts from as-purchased weight of 10 kg, trim and waste weight of 2.2 kg. The resulting figures are edible portion weight of 7.80 kg and edible yield of 78.0%. The percentage is reusable only when the purchasing specification is recorded with it.
Building a useful trim record
A useful yield record names the purchasing form: whole, peeled, bone-in, skin-on, frozen, drained, or another precise specification. Without that description, the percentage cannot be applied safely to the next order.
Weigh trim promptly. Water from washing, melting ice, and drying can shift both sides of the measurement. A consistent sequence—receive, drain if specified, weigh, fabricate, and weigh again—produces more comparable results.
Usable elsewhere is not usable here
Average several ordinary batches and keep the individual observations. The range reveals whether supplier, size, season, or staff technique is driving variation. An average without its spread can make a volatile ingredient look more predictable than it is.
Label the yield before reusing it
Attach yield observations to supplier, item specification, lot or date, and preparer when practical. That context turns a percentage into purchasing evidence instead of an isolated number copied forward indefinitely.
Before adopting an average, inspect the lowest and highest observed yields. Purchasing to the average may still create shortages when a delivery falls near the low end, so a menu with little flexibility may need a conservative planning factor. Note whether recovered trim offsets cost elsewhere.
Questions about trim yield
Is liquid drained from a can considered waste?
Yes when the recipe uses only the drained solids; document that the purchasing weight included liquid.
Can usable scraps be counted as edible portion?
Include them only if they enter the same production batch. Otherwise track them as a separate recovery.
Trim records become more useful when they are carried forward to turn usable weight into servings and separate cooking loss from trim.