Serves around 6 portions so can easily freeze and eat later.

Ingredients

• 4 large leeks, chopped
• 1 medium onion, finely sliced
• 56g butter
• 1 1/2 pints of vegetable stock
• 275ml milk (if vegan can substitute)
• Salt and pepper

Serve

• Bread

Instructions

1. Prepare all ingredients listed above.
2. Gently melt the butter in a large saucepan and add the leeks, onions and potatoes, stirring well.
3. Season with salt and pepper.
4. Cover the vegetables on a low heat for 15 minutes.
5. Add the 1 1/2 pint of stock and 275ml milk. Bring to a simmering point and leave to simmer for 20 minutes.
6. After 20 minutes, leave to cool for a moment and then blend.
7. Return the soup to sauce pan and reheat gently.
8. Serve with some bread.

Cost

• Leeks = £1
• Onion = £0.09
• Butter = £0.85
• Vegetable stock = £0.50 for 10 cubes
• Milk = £1.10

Total cost: £3.54

6 portions = £0.59 per portion

(These prices are from Tesco, the average price supermarket, so you could get cheaper prices at cheaper supermarkets).