If your recipe yields, let’s say, 20 four-ounce portions, and you need 30 five-ounce portions, you must add a few steps to the conversion process (Procedure for Converting Total Yield)
- 1. Determine total yield of the recipe by multiplying the number of portions by the portion size:
portions X portion size = total yield (old) - 2. Determine the total yield you desire by multiplying the desired number of portions by the desired portion size:
desired portions X desired portion size = total yield (new) - 3. Divide desired yield by recipe yield to get the conversion factor:
total yield (new) / total yield (old) = conversion factor - 4. Multiply each ingredient by the conversion factor:
conversion factor X old quantity = new quantity
NOTE: The conversion factor may sometimes turn out to be 1. In these cases the total yield is obviously the same, and the recipe does not need to be changed.