Spaghetti Bolognese for a crowd
For spaghetti bolognese, EventCalc scales spaghetti, ground meat and tomatoes to your group. The basis is a published recipe for 4 servings. EventCalc counts one serving per adult and scales every ingredient linearly to your guest count — without inventing a finished weight for the cooked dish, which the source does not state.
Ingredients for your guest count
| Ingredient | Recipe (4 servings) | 10 people | 20 people | 30 people | 50 people | 100 people |
|---|---|---|---|---|---|---|
| Onions | 2 pcs | 5 pcs | 10 pcs | 15 pcs | 25 pcs | 50 pcs |
| Garlic | 1 pcs | 2.5 pcs | 5 pcs | 7.5 pcs | 12.5 pcs | 25 pcs |
| Carrots | 100 g | 250 g | 500 g | 750 g | 1.25 kg | 2.5 kg |
| Rapeseed oil | 30 ml | 75 ml | 150 ml | 225 ml | 375 ml | 750 ml |
| Ground meat | 500 g | 1.25 kg | 2.5 kg | 3.75 kg | 6.25 kg | 12.5 kg |
| Tomato purée | 30 g | 75 g | 150 g | 225 g | 375 g | 750 g |
| Peeled tomatoes | 800 g | 2 kg | 4 kg | 6 kg | 10 kg | 20 kg |
| Oregano | 10 g | 25 g | 50 g | 75 g | 125 g | 250 g |
| Spaghetti | 400 g | 1 kg | 2 kg | 3 kg | 5 kg | 10 kg |
| Mozzarella (grated) | 50 g | 125 g | 250 g | 375 g | 625 g | 1.25 kg |
The "Recipe" column is the source's original figure. Every other column is scaled from it: for 10 people that is 2.5 times the recipe.
Calculate your own guest count
- Carrots
- 500 g
- Rapeseed oil
- 150 ml
- Ground meat
- 2.5 kg
- Tomato purée
- 150 g
- Peeled tomatoes
- 4 kg
- Oregano
- 50 g
Listed without an amount
The recipe lists these without a quantity: Salz, Pfeffer, Zucker. EventCalc invents no gram figure for them and therefore does not include them in the shopping list.
Servings instead of finished weight
The recipe states a serving count but no weight for the finished dish. That is why the planning unit here is "serving" and not "grams of Spaghetti Bolognese". An invented gram figure would imply a precision the source does not support.
The same principle applies to price: ingredients with a verified market reference feed the cost estimate, ingredients without one stay openly reported as missing. An incomplete estimate is never presented as a final total.
Sources & data status
- REWE: Schnelle Spaghetti BologneseVerified by EventCalc on Aug 29, 2026
How EventCalc separates source values, its own assumptions and price status is explained on the methodology page.
Frequently asked questions
- How much Spaghetti Bolognese for 20 people?
- Onions: 10 pcs, Garlic: 5 pcs, Carrots: 500 g (see the table for the remaining ingredients).
- How is it scaled from the recipe basis?
- Every ingredient amount is multiplied by "servings needed divided by 4". For 20 people that is 5 times the recipe.
- How are children calculated?
- EventCalc counts 0.6 servings per child. The recipe itself gives no child-specific value — the factor is a declared EventCalc assumption.
- How much spaghetti per person?
- Derived from this recipe: 400 g of spaghetti for 4 servings, so 100 g of dry pasta per serving. That figure describes only the pasta component of the dish.
More dishes
Plan your full event
The full planner combines several dishes, drinks and guest counts — including a shopping list with pack sizes, equipment and PDF/Excel export.
Open the EventCalc calculator