Why Your Food Cost Is Higher Than You Think (Hidden Leaks to Fix Now)

Most restaurants don’t have a food cost problem, they have a visibility problem. The true causes of high COGS are usually buried in small daily habits, inaccurate systems, or unmanaged processes.

Here are the hidden leaks most operators overlook.

1. Recipe Drift (The Silent Margin Killer)

Recipes change over time:

• A scoop becomes a “rounded scoop”

• A pour becomes a “heavy pour”

• Garnishes get more generous

• Prep cooks adjust without telling anyone

Re-costing every recipe quarterly prevents quiet margin erosion.

2. Over-Prep and Over-Production

Prep teams often prep:

• Based on habit

• Based on the wrong day of the week

• For volume that no longer exists

• To “make life easier” instead of sticking to par sheets

Prep logs and accurate forecasting solve this immediately.

3. Vendor Price Increases No One Notices

If you’re not checking pricing every week, you’re not controlling cost.

Price creep on:

• Chicken

• Beef

• Produce

• Fryer oil

• Dairy
  

  Issues such as these can increase COGS 1–5% before you even notice.

4. Poor Yield Management

What you think an ingredient yields is rarely accurate.

Examples:

• A “10 lb case” yields 7–8 lbs after trimming

• Cheese shredded in-house varies widely

• Vegetables shrink significantly when cooked

Actual-yield costing is one of the biggest unlocks in BOH finance.

5. POS Mapping Issues

If menu items are mapped incorrectly:

• Discounts inflate COGS

• Delivery fees get miscategorized

• Alcohol revenue gets reported as food

• Voids blow up your food cost unexpectedly

POS accuracy is foundational.

6. Inaccurate Inventory Counts

Weekly inventory should be:

• Counted by the same people

• In the same order

• On the same day

• Using the same unit of measure

Otherwise your food cost formula is wrong to begin with.

Final Thoughts

COGS rarely blows up overnight. It rises slowly, through dozens of tiny, invisible issues.
Fixing visibility fixes your food cost.

If you want a full COGS audit including recipes, vendor pricing, prep systems, waste logs, POS mapping, Lumiere can get you a clean, accurate view immediately.