Ingredient control, recipe yield and production planning
Distinguish purchased quantity from usable quantity. A trimming yield is usable weight divided by purchased weight; purchasing for a required usable amount therefore divides that required amount by the yield fraction. Keep kilograms and grams consistent before multiplying by a unit price. A recipe conversion factor is required yield divided by original yield, but equipment capacity and process validation must also be checked when scaling production.
Inventory records connect the incoming batch, its condition, storage and eventual use. Rotate stock by the appropriate date and condition rather than using a damaged older batch merely because it arrived first. A purchase specification makes product quality, cut, size and receiving requirements explicit. Batch identification and accurate records support investigation if a problem appears later.
Cost measures answer different questions. Ingredient cost percentage divides ingredient cost by the relevant sales value, while contribution margin subtracts variable cost from sales. Neither is the same as final profit after fixed costs and other expenses. Portion consistency affects both guest expectations and cost. Plan work among stations without allowing the drive for speed or a favorable margin to override food safety, allergen controls or the actual finished-dish specification.