How to lower food cost with actual vs theoretical variance
The gap between what food should have cost and what it did is money you can find. How to measure it weekly without drowning in counts.
Theoretical food cost is what food should have cost given what you sold: each item's recipe cost times the number sold, added up. Actual food cost comes from inventory: what you started with, plus what you bought, minus what's left. The difference is variance — product that left the building without being sold.
| Net sales | $25,000 |
|---|---|
| Theoretical food cost | $7,125 (28.5%) |
| Actual food cost | $7,800 (31.2%) |
| Variance this week | $675 |
| Variance over a year at that rate | $35,100 |
Where variance usually comes from
- Waste that isn't logged: expired product, dropped food, remakes.
- Portions: an extra ounce across hundreds of orders.
- Receiving: short deliveries signed for, or substitutions at a higher cost.
- Recipe costs not updated after a supplier price change.
- Comps and staff meals that weren't rung in.
- Counting errors, which make variance jump from week to week.
How to run counts without drowning
- Count your top 15–20 items by cost every week. They're most of your spend.
- Same day, same time, same person, in units rather than dollars.
- Do a full count monthly.
- Log waste on a sheet at the line, every shift.
- Track variance per item. The total says there's a gap; the item says where.
What good looks like
Many operators aim to keep actual within one to two points of theoretical. The trend matters more than the level: a store at 1.5 points every week is in control, and a store that moves from 1 to 3 has changed something.
If variance points at missing product, look at process first — receiving, portioning, waste logging — and follow your HR policies and local law before drawing conclusions about any person.
Where Franlever fits
With an inventory or accounting connection, Franlever reads food cost beside each store's sales and labor, so it can be seen weekly rather than only when the P&L closes.
Common questions
- What is theoretical food cost?
- The food cost you would have if every item were made exactly to recipe with no waste: recipe cost times units sold, divided by sales.
- What is an acceptable food cost variance?
- Many operators aim for actual food cost within one to two percentage points of theoretical. A stable variance matters more than a single week's figure.
General information for restaurant and franchise operators, not legal, tax, accounting or financial advice. Figures in examples are illustrations, not predictions or promises of results. Laws and platform policies change and differ by location, so check the current rules and talk to a qualified advisor about your situation.