A breakfast buffet for 30 people requires careful planning. Too little food means hungry guests, too much means waste and loss. In this article you'll learn step-by-step how to calculate the right quantities.
Basic quantities per person
For a standard breakfast buffet, plan with these quantities per person:
- Bread: 2-3 slices (80-120 grams)
- Toppings: 40-60 grams (cheese, cold cuts)
- Butter/margarine: 15-20 grams
- Jam/peanut butter: 20-30 grams
- Yogurt: 125-150 grams
- Fruit: 100-150 grams
- Muesli/cornflakes: 40-60 grams
- Milk: 200-250 ml
- Juice: 150-200 ml
- Coffee/tea: 2-3 cups per person
💡 Example for 30 people:
Standard breakfast buffet:
- Bread: 3 kg (100g per person)
- Cheese: 1.5 kg (50g per person)
- Cold cuts: 1.5 kg (50g per person)
- Butter: 500 grams (17g per person)
- Jam: 750 grams (25g per person)
- Yogurt: 4 liters (133ml per person)
- Fruit: 4 kg (133g per person)
Total estimated cost: €180-220
Factors that influence your quantity
The standard quantities are a baseline. These factors determine whether you need more or less:
- Time of day: Early breakfast (7:00) = less hunger than late breakfast (10:00)
- Target group: Men eat on average 20-30% more than women
- Buffet duration: Longer open = more consumption per person
- Other meals: If lunch follows within 3 hours, people eat less
- Season: Winter = more hot drinks, summer = more fruit and juice
⚠️ Note:
Always calculate 10-15% extra for unexpected guests or higher consumption. Better to have something left over than to run short.
Cost price calculation per person
To monitor your profit margin, calculate the cost price per person:
💡 Example cost price calculation:
Breakfast buffet 30 people:
- Bread (3kg): €6.00
- Toppings (3kg total): €45.00
- Dairy (yogurt, milk): €12.00
- Fruit (4kg): €16.00
- Beverages (coffee, tea, juice): €15.00
- Other (butter, jam): €8.00
Total purchase: €102.00
Cost price per person: €3.40
At a selling price of €12.50 per person (excl. VAT: €11.47), your food cost is: €3.40 / €11.47 = 29.6%. That falls within the standard range of 25-35% for breakfast.
Practical purchasing and preparation
Spread your purchases over different times:
- 3 days before: Non-perishable products (bread can be frozen, jam, coffee)
- 1 day before: Fresh products (fruit, yogurt, milk)
- Morning of: Fresh bread (if you don't use frozen)
With a system like KitchenNmbrs you can automatically calculate these quantities and cost prices and plan your purchases.
How do you calculate buffet quantities? (step by step)
Determine your basic quantities per person
Use the standard table: 100g bread, 50g toppings, 150ml yogurt, etc. per person. This is your starting point for the calculation.
Adjust for target group and circumstances
Increase by 20-30% for hungry target groups, decrease by 10-15% if lunch follows shortly after breakfast. Always calculate a 10% safety margin.
Calculate total quantities and costs
Multiply your adjusted quantities per person by the number of guests. Add up all purchase costs and divide by number of people for cost price per person.
✨ Pro tip
Weigh what's left over per product after the event. This gives you exact data for your next buffet and helps you minimize waste.
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
How much bread do I need for 30 people?
Plan on 2-3 slices per person, that's approximately 3-3.5 kg of bread total. When in doubt, choose 3.5 kg - better to have something left over than to run short.
Can I prepare everything the day before?
Non-perishable products yes, fresh products like cut fruit better on the morning itself. Yogurt and cheese can come out of the fridge the evening before.
How do I prevent food waste at a buffet?
Start with 80% of your calculated quantity and refill as needed. Keep track of what's popular and what's left over for next time.
What does a breakfast buffet cost per person in purchases?
On average €3.00-4.50 per person for ingredients, depending on quality and variety. Luxury buffets can go up to €6.00-8.00 per person.
How much coffee do I need for 30 people?
Plan on 2-3 cups per person. That's approximately 500-750 grams of coffee beans or 1.5-2 liters of strong coffee that you keep warm.
📚 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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