How To Calculate Food Cost Per Portion. In this example, cost factor per portion = portion size x cost factor per kg = 0.250 kg x 1.79 = 0.45. You want to calculate the food cost per margherita pizza you make.
For example, a selling price of $6.50 gives you a food cost percentage of roughly 34% ($2.207/$6.50)*100. This sounds a lot more complicated than it is. The cost factor per portion is found by multiplying the portion size by the cost factor per kilogram.
Simply divide the selling price into the plate cost for the food cost ratio and multiply the ratio by 100 for the food cost percentage.
Plate cost, also known as portion or recipe cost, is the total cost of a dish before margins are added. Add together the total food sales per shift. Let’s run through an example. It could mean things like only offering each table one piece of bread per person and carefully watching beverage refills.