How to Conduct a Food Cost Audit

A food cost audit is a systematic review that compares what your food should cost against what it actually costs, then traces every gap back to its source — recipes, purchasing, portioning, waste, or theft. Run one whenever your food cost creeps up 2+ points, or quarterly as routine maintenance. Here's the step-by-step process.

When to run an audit

Don't wait for a crisis. Trigger a full audit when:

• Food cost rises 2 or more points over two periods.
• Your theoretical and actual numbers diverge by more than 2 points.
• A key vendor raises prices across a category.
• You change your menu or suppliers.

The step-by-step audit

1. Establish the baseline. Calculate your current food cost percentage and your theoretical vs. actual variance. This tells you how big the problem is before you hunt for causes.
2. Re-cost your top 10-15 sellers. Pull current invoice prices and recost each dish. Ingredient inflation quietly pushes plate costs up while menu prices stay put.
3. Audit portioning on the line. Spend a service watching plates go out. Weigh a few proteins against spec. Over-portioning is the single most common leak.
4. Review purchasing. Compare invoice prices across the last few months. Are prices creeping? Are you buying the right pack size? Are credits for short or spoiled deliveries being caught?
5. Check receiving. Is someone verifying weights and counts against the invoice at the door? Unchecked deliveries are where shortages hide.
6. Examine waste and spoilage. Review the waste log. Cross-reference with your par levels — chronic spoilage usually means pars set too high.
7. Reconcile comps, voids, and staff meals. These reduce inventory without matching sales and inflate your food cost if unaccounted.
8. Verify menu prices. Any dish whose plate cost has outrun its price needs a reprice or a re-portion.

An audit findings summary

Audit findings are worthless without follow-through. Assign each fix an owner and a date, then re-measure next period to confirm the point came back.

Make the audit continuous, not annual

An audit is a snapshot; the goal is a system that watches these numbers all the time. Cobblestone POS keeps recipe costs current from vendor invoices, tracks comps and voids, and surfaces theoretical-vs-actual variance in its reporting — so much of the audit runs itself, and Daisy, its AI assistant, can flag the items drifting out of line before they cost you a full period. It's a free, all-in-one platform for independents, which is why owners are leaving systems like Toast ($470+/month) that charged extra for this kind of visibility.

After the audit

Close the loop: implement each fix, communicate the new specs to your team, and schedule the next review. Food cost control is a habit, not an event — pair regular audits with weekly inventory counts and the leaks stay small.

Frequently asked questions

How often should I run a food cost audit? Quarterly as routine maintenance, plus any time food cost rises 2 or more points, you change your menu, or a vendor raises prices across a category.

How long does an audit take? A focused audit of your top sellers, purchasing, and portioning can be done in a day or two. The value is in the follow-through — assigning each fix an owner and a deadline.

What's the fastest win in most audits? Portioning. Weighing a few proteins against spec during service almost always uncovers over-portioning worth one to several points of margin.