What is Yield Percentage?

Your yield percentage tells you how much waste happens between the bowl and the customer's table. That matters because you price based on finished weight, not raw ingredients. A chocolate layer cake with a 92% yield costs you more per slice than one with a 96% yield, even if the ingredient list is identical. Evaporation during baking, crumbs left on the bench, the cake you trim level, ganache that sticks to the piping bag — it all adds up. You need to know your actual yield, not guess it. Let's use a real example: a 9-inch chocolate cake. You weigh out 450g flour, 300g sugar, 200g butter, 150g eggs, 50g cocoa powder, 30g baking soda, 20g salt, and 100g hot water. That's 1300g of ingredients. After baking, cooling, and leveling the dome, you have 1235g of finished cake ready to frost. Your yield is (1235 / 1300) × 100 = 95%. That 65g loss is your reality — not a rounding error. Yield varies by product. A lean dough bread (just flour, water, salt, yeast) might yield 98% because there's minimal loss. A butter cake loses more to evaporation and trimming — expect 92–96%. A fondant-covered wedding cake loses more during crumb coat, ganache application, and the inevitable knife slip — you might see 88–92%. A laminated croissant loses butter to the bench during folding and shaping — 85–90% is normal. If you don't know your yield for each product, you're pricing blind. Here's why it matters to your bottom line: if you price a 9-inch chocolate cake at $45 based on a 96% yield, but your actual yield is 93%, you're serving 30g less cake per order. That's about $1.50 in margin you're giving away on every cake. Across 20 cakes a month, that's $30 you didn't plan for. Across 12 months, it's $360 — enough to buy a new stand mixer or pay for a month of supplies.