Food cost

Yield: the food cost mistake hiding in every protein

By José, Mise en Profit · The cost you never see on the invoice.

Here is a mistake I find on almost every menu I cost, and it is invisible until you go looking for it. Operators cost a dish using the price they paid per kilo. That number is on the invoice, it feels solid, so they trust it. The problem is you do not serve what you buy. You serve what is left after trimming, boning, and cooking, and you paid full price for the part that hit the bin.

You paid for a kilo. You served 800 grams.

Take a whole fish, a primal cut of beef, a case of chicken. By the time you trim the fat, cut away the bone, peel, and lose more weight to cooking, a real chunk of what you bought never reaches a plate. On some proteins that loss is 15 percent. On others it is closer to 40. But you paid for 100 percent of it.

If you cost the dish at $20 a kilo, you are understating that ingredient by 25 percent on every single plate. Multiply that across a protein dish that sells all night and the gap is not rounding. It is real margin you never knew you were giving away.

The cheap cut is not always cheaper

This is where yield gets interesting. A cut that looks cheaper per kilo can cost more per plate once you account for heavy trim, while a pricier cut that yields clean can be the better buy. You cannot see that from the invoice price. You can only see it when you cost the usable yield, not the purchase weight. I have moved clients to a "more expensive" supplier cut and lowered their real plate cost, purely because it trimmed cleaner.

Cost the yield, not the invoice

The fix is simple once you know to do it. Weigh what you actually use. If a kilo of raw protein yields 800 usable grams, your real cost per gram is the purchase price divided by 800, not 1000. Build that into your cost per gram and every dish using that ingredient becomes honest in one move. (This is the step most people skip in how to actually cost a dish.)

You do not have to do this for all 80 dishes. Do it for your proteins, the most expensive ingredients on the plate, where a yield mistake costs the most. Get those honest and your food cost stops surprising you at the end of the month.