Vegetable Sauce for Pasta

Ingredients

• 2 tbsp water
• 1 small onion, grated
• 1/2 green pepper, seeded and chopped
• 1/2 stick of celery, chopped
• 2 small courgettes, chopped
• 2 medium tomatoes, chopped
• 1 tbsp tomato paste
• 4 large mushrooms, sliced
• 1 clove garlic, crushed
• 1/2 tsp finely chopped fresh basil, or good pinch of dried
• ground black pepper