Running the same recipe for 4 diners and 400 guests sounds impossible until you know how. Most operators create separate formulas for different volumes, which creates inconsistent costs and flavors. Master one formula that scales seamlessly from single portions to massive catering events.
Build with weight-based ratios
Scalable recipes depend on weight measurements, not volume. Grams scale perfectly linear—cups and tablespoons don't. Your 2g of salt remains exactly 2g for one bowl or three hundred.
💡 Example: Tomato soup base
For 1 portion (250ml):
- Tomatoes: 200g
- Onion: 25g
- Garlic: 2g
- Broth: 150ml
- Olive oil: 5g
- Salt: 2g
- Pepper: 0.5g
For 300 portions: multiply everything by 300
Volume measurements create chaos. A "cup" varies depending on who's measuring and what equipment you're using. Weight doesn't lie.
Calculate food cost per 100 grams
This approach makes portion costing simple across any volume. You calculate once, then scale infinitely.
💡 Example: Cost calculation
Tomato soup - total weight 1 portion: 384.5g
- Tomatoes 200g at €2.50/kg = €0.50
- Onion 25g at €1.20/kg = €0.03
- Other ingredients = €0.22
Total food cost 1 portion: €0.75
Per 100g: €0.75 / 3.845 = €0.195
Now any portion becomes simple math: 250ml portion = €0.49, 150ml amuse = €0.29, 2 liters for catering = €3.90. One formula, endless applications.
Separate base production from finishing
Smart recipes have two components: the scalable base and individual finishing. You batch the base, then finish per order or per service.
- Base: Everything that can be prepped ahead (soups, sauces, marinades)
- Finishing: Garnishes, fresh herbs, final seasoning adjustments
- Portioning: Exact weights for consistent results
⚠️ Note:
Large batches (300+ portions) lose more liquid through evaporation. Plan for 10-15% extra liquid in massive productions.
Test at three different scales
Before finalizing any recipe, test it at 1 portion, 10 portions, and 50+ portions. Ingredients behave differently as volumes increase—one of the most common blind spots in kitchen management.
💡 Example: Scale effects
What changes at large volumes:
- Cooking time: larger vessels need longer heating periods
- Salt: flavors become muted in big batches
- Herbs: some intensify, others fade
- Texture: thickening agents react differently
Document these variations directly in your recipe. Example: "50+ portions: add 20% more salt, extend cooking time by 10 minutes."
Centralize your recipe system
Store scalable recipes in one accessible location. Every team member should work from identical formulas—no exceptions.
- Single master recipe per dish (never separate catering versions)
- Clear scaling factors documented
- Food cost per 100g recorded
- Large-volume adjustments noted
Recipe management systems automatically calculate ingredient quantities and costs when you input portion numbers. This eliminates manual calculation errors on big orders.
✨ Pro tip:
Set minimum batch sizes for each recipe—making 1 portion of braised short ribs isn't profitable, but 8 portions are. Document these thresholds to streamline both daily service and catering decisions.
How do you create a scalable recipe? (step by step)
Convert to weight
Rewrite all ingredients to grams instead of volume units. Weigh everything for your current portion and note the exact weights. This is your base ratio formula.
Test at three scale sizes
Make the recipe for 1, 10, and 50 portions. Pay attention to differences in cooking time, flavor, and texture. Note what adjustments are needed for large volumes.
Calculate food cost per 100 grams
Add up all ingredient costs and divide by the total weight of the finished product. This way you can quickly calculate any portion size without having to recalculate.
Split base and finishing
Determine what you can make in large batches in advance (base) and what needs to be done per portion (garnish, fresh elements). This makes catering prep much more efficient.
Document in one system
Save the master recipe in one central location with all scale factors and special notes. Make sure everyone on your team has access to the same version.
✨ Pro tip
Test your recipe at 12-portion batches before scaling to 300—this reveals equipment limitations and timing issues you'll miss at smaller scales. Document any adjustments needed for mid-range volumes.
Calculate this yourself?
In the KitchenNmbrs app you can do this in just a few clicks. 7 days free, no credit card.
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Frequently asked questions
Can I just multiply all ingredients by 300?
Most ingredients scale linearly, but seasonings and aromatics often need adjustment. Salt becomes less pronounced in large batches, while some herbs intensify. Always test your scaled version first.
How do I prevent flavor differences between small and large batches?
Separate your recipe into base components (fully scalable) and finishing elements (applied per portion). Make bases in quantity, but add delicate seasonings and garnishes in smaller batches.
What if my equipment can't handle 300 portions at once?
Calculate how many sequential batches fit your equipment capacity. If your largest pot handles 50 portions, you'll need 6 identical batches. Plan your timing and mise en place accordingly.
How do I price catering events using scalable recipes?
Use your per-100g food cost × portion weight × guest count for ingredient costs. Then add packaging, transportation, labor, and profit margins for your final catering price.
Should I create separate catering recipes?
Never create separate recipes—use one master formula with scaling notes. Document any large-volume adjustments (extra salt, longer cooking times) within the same recipe card to maintain consistency.
What's the safest way to cool large batches?
Large volumes cool slowly and create food safety risks. Divide into shallow containers (maximum 4-inch depth) and refrigerate immediately. Monitor core temperatures and document for HACCP compliance.
📚 Sources consulted
- EU Verordening 852/2004 — Levensmiddelenhygiëne (2004) — Official source
- EU Verordening 853/2004 — Hygiënevoorschriften voor levensmiddelen van dierlijke oorsprong (2004) — Official source
- EU Verordening 1169/2011 — Voedselinformatie aan consumenten (2011) — Official source
- NVWA — Hygiënecode voor de horeca (2024) — Official source
- NVWA — Allergenen in voedsel (2024) — Official source
- Codex Alimentarius — International Food Standards (2024) — Official source
- FSA — Safer food, better business (HACCP) (2024) — Official source
- BVL — Lebensmittelhygiene (HACCP) (2024) — Official source
- Warenwetbesluit Bereiding en behandeling van levensmiddelen (2024) — Official source
- WHO — Foodborne diseases estimates (2024) — Official source
Food Standards Agency (FSA) — https://www.food.gov.uk
The HACCP standards shown in this application are for informational purposes only. KitchenNmbrs does not guarantee that displayed values are current or complete. Always consult the FSA or your local authority for the latest regulations.
Written by
Jeffrey Smit
Founder & CEO of KitchenNmbrs
Jeffrey Smit built KitchenNmbrs from 8 years of hands-on experience as kitchen manager at 1NUL8 Group in Rotterdam. His mission: give every restaurant owner control over food cost.
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