Why restaurant food cost changes between periods
Investigate a restaurant food-cost change through comparable dates, unit prices, counts, recipes and sales mix. Confirm the cause with source records.
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Published 2026-09-10
Updated 2026-10-01
Summary
Food-cost movement can come from prices, usage, sales mix or reporting timing. Confirm the cause before choosing a change.
Check whether the comparison is consistent
Compare the same dates and account definitions. A late invoice or a count taken on a different day can shift the reported result.
Separate purchase price from usage
Check supplier pack sizes and unit prices, then examine quantities used between counts. Recipes, yield, portions and waste records can explain usage where they are available.
Include the dishes being sold
A change in sales mix can alter the average ingredient cost. Review current menu and sales records before attributing the movement to a kitchen or supplier problem.
Verify the strongest explanation
Ask the kitchen or purchasing contact for the record that would confirm the suspected cause. Management then chooses a specific response and a measure to review.
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