AP vs EP: Why Your Food Cost Is Wrong Before You Start Cooking
AP and EP are two of the most important abbreviations in kitchen math. AP means as purchased: the product exactly as it arrives from the supplier, with skin, bones, stems, peels, and fat still attached. EP means edible portion: what is left after trimming and preparation, the part that actually ends up on a plate. The difference between the two is where a lot of food cost quietly disappears.
A recipe costed at the AP price looks cheaper than it really is, and an order placed for EP quantities comes in short. Neither mistake shows up right away. They show up weeks later as a food cost percentage that is higher than it should be and a kitchen that seems to run out of the same items again and again. Getting AP and EP right is one of the simplest ways to make recipe costs, orders, and prep lists accurate.
How to Convert AP to EP
The conversion runs through the yield percentage. Weigh the product as purchased, trim and prepare it the way your recipe calls for, weigh the usable portion, and divide EP weight by AP weight. That gives you the yield. To find the true cost of the usable product, divide the AP price per pound by the yield. The BCcampus kitchen management textbook uses a beef tenderloin as its example: bought at 2.5 kilograms, trimmed down to 1.75 kilograms, for a 70 percent yield. At $23.00 per kilogram AP, the usable tenderloin really costs about $32.86 per kilogram.
To work the other way and figure out how much to order, Penn State's menu costing course gives the formula: multiply the number of portions by the portion size, then divide by the yield percentage. Those two calculations, one for cost and one for quantity, are the core of AP-to-EP math.
What the Difference Looks Like on Common Items
The table below shows how quickly the gap adds up. The yields are examples only; your actual numbers depend on your suppliers, product specs, and how your team prepares each item.
Item | AP price | Example yield | EP cost per usable lb | Difference |
Salmon, whole side | $11.00/lb | 75% | $14.67/lb | +33% |
Broccoli, bunched | $1.80/lb | 60% | $3.00/lb | +67% |
Pineapple, whole | $1.20/lb | 50% | $2.40/lb | +100% |
Beef tenderloin (textbook example) | $23.00/kg | 70% | $32.86/kg | +43% |
If a grilled salmon entrée is costed at $11.00 a pound instead of $14.67, every portion's cost is understated by a quarter, and the menu price may be set too low to hit its target margin. If the kitchen orders 30 pounds of broccoli expecting 30 pounds of florets, it will come up about 12 pounds short.
Why AP vs. EP Errors Persist
AP-to-EP errors persist because yields are rarely re-tested. A yield written on a recipe card years ago may not reflect today's supplier, today's product size, or today's team. Supplier changes are a common culprit: a new produce vendor ships heavier stems, or a new fish supplier delivers sides with more belly fat. Staff changes matter too. A cook who learned to trim conservatively from one chef may trim far more aggressively under another.
And with wholesale prices moving quickly, a small change in yield can have a large effect on cost. The National Restaurant Association reports that wholesale prices for unprocessed finfish rose 16.3 percent in the year to August 2026. On an item like salmon, a lower yield on top of a higher price compounds fast.
Keeping EP Numbers Accurate
The answer is to measure yield continuously instead of testing it once. Recipe costing software can only work with the yield someone typed in. Metafoodx, a food operations intelligence platform for commercial kitchens, measures it. Prep staff record trim and discarded product in Metafoodx as they work and tag the item and the reason. Metafoodx then compares that recorded loss with the expected usable yield for each item, so the kitchen can see when actual EP is falling short of the recipe standard and by how much.
If the gap traces to technique, the chef can coach the team. If it traces to incoming product, purchasing can take it up with the supplier, using measured data rather than anecdotes. Because the same platform also tracks what is produced, consumed, and left over at the service line, the chef can follow a single item like salmon from the prep table to the guest's plate and see exactly where its cost is going.
Frequently Asked Questions
What does AP and EP mean in cooking? AP means as purchased: the product as it arrives from the supplier. EP means edible portion: what is left after trimming and preparation.
How do you convert AP to EP? Multiply the AP weight by the yield percentage to get EP weight. To find EP cost, divide the AP price per unit by the yield percentage.
Why does AP vs EP matter for food cost? Recipes costed at the AP price understate the real cost of every portion, and orders placed for EP quantities come in short, which raises food cost and causes run-outs.
Metafoodx is a food operations intelligence platform that captures the food journey from prep to plate, so foodservice teams can lower food cost, produce more accurately, and prevent waste before it happens. Ready to see how we can help transform your food service operation? Book a demo with our team today.
