Minestrone soup

Ingredients

• 3 tbsp olive oil
• 2 celery stalks, sliced
• 2 leeks, sliced
• 2 carrots, chopped
• 2 garlic cloves, crushed
• 300g potatoes, diced
• 1.5lt boiling water or stock
• sea salt and pepper
• 50g small maccheroncini or dried soup pasta
• 400g canned chopped tomatoes
• 1 tbsp tomato paste
• 400g tinned borlotti beans, rinsed
• 200g silverbeet leaves, roughly chopped
• 2 zucchini, roughly chopped
• 2 tbsp pesto
• 2 tbsp grated parmesan