Soup au pistou – a hearty Provencal soup

Ingredients

• 150 grams canned red kidney beans
• 100 grams canned white beans
• 150 grams green beans
• 6 carrots
• 1 medium-sized waxy potato
• 1 zucchini
• 1 onion
• 1 leek
• 300 grams of tomatoes
• 80 grams of elbow macaroni
• A good handful of Gruyere cheese
• 100 grams of smoked bacon (optional)
• 3 litres of water
• Pepper and salt
• 4 cloves of garlic
• A large handful of fresh basil
• 50 ml olive oil