Costs02/15/2026
Food Cost Deep Dive
Calculate COGS, control ingredients, and optimize profit margins
28-35% Ideal Food Cost(of revenue)<3% Theoretical vs Actual Gap(acceptable variance)<5% Waste Target(of total ingredients)≈10% more profit Every 1% Saved(net profit impact)
Food Cost Formulas
COGS ÷ Revenue
Food Cost %
= Total ingredient cost / Total revenue × 100. Target: 28-35% depending on model.
Recipe-based
Theoretical Food Cost
= Sum of (recipe cost × quantity sold) / Revenue. The "ideal" cost if zero waste.
Inventory-based
Actual Food Cost
= (Opening stock + Purchases − Closing stock) / Revenue. What you actually spent.
<5%
Waste %
= (Actual − Theoretical) / Revenue × 100. Gap >5% = investigate theft, spoilage, or over-portioning.
Food Cost Benchmarks by Ingredient Category
Proteins (meat, seafood)35-50%Highest cost category. Standardize portions strictly — a 10g variance per dish adds up fast.
Vegetables & herbs15-25%High spoilage rate (20-30% waste if not managed). Buy frequently in smaller batches.
Beverages (coffee, tea, milk)15-25%Low cost, high margin. Coffee shops thrive here — cost per cup often under VND 10,000.
Dry goods & sauces10-20%Long shelf life, stable prices. Buy in bulk for better rates.
Packaging & takeaway3-8%Often overlooked. Delivery-heavy businesses can spend VND 5,000-15,000 per order on packaging.
Practical Tips to Reduce Food Cost
- >Standardize every recipe with exact weights and measurements. Create recipe cards with photos — no "a pinch of this, a handful of that." A 10% portion variance on a VND 50K dish = VND 5K lost per serve.
- >Negotiate with at least 3 suppliers for each key ingredient. Even 5% savings on proteins (your largest cost) can boost net profit by 1-2%. Review supplier pricing quarterly.
- >Implement strict FIFO (First In, First Out) for all inventory. Label every container with the date received. Spoiled ingredients = money in the trash.
- >Use portion control tools: scales, measuring cups, standardized ladles. Train all kitchen staff to portion consistently — don't rely on "experience."
- >Apply menu engineering: identify your Stars (high profit + high sales) and Dogs (low profit + low sales). Promote Stars, rework or remove Dogs. Review monthly.
- >Use seasonal ingredients when possible. In-season produce in Vietnam can be 30-50% cheaper and fresher. Adapt your menu 3-4 times per year.
- >Conduct daily inventory checks for high-value items (proteins, dairy, alcohol). Weekly full inventory counts. Compare actual vs theoretical — investigate any gap >3%.
- >Cross-utilize ingredients across multiple dishes. If you buy premium beef for one dish, use trim for another. Minimize single-use specialty ingredients.
Red Flags — Investigate Immediately
Actual food cost exceeds theoretical by >5%
This gap means VND is leaking somewhere: theft, spoilage, over-portioning, or unrecorded waste. Audit kitchen operations immediately.
Inventory shrinkage without explanation
If your closing stock is consistently lower than expected, you may have a theft problem or unrecorded spoilage. Install cameras in storage areas and tighten receiving procedures.
Supplier prices rising without notice
If a supplier raises prices by 10-15% without warning, you need backup suppliers ready. Never rely on a single source for critical ingredients.
Food cost creeping up month-over-month
A slow 1-2% rise each month is hard to notice but devastating over 6 months. Track weekly food cost % — not just monthly.
Food cost is the single largest controllable expense in F&B. A 1% reduction in food cost on VND 500M/year revenue = VND 5M saved annually — which flows directly to your bottom line. Master your food cost, and you master your profitability.
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