White Bean, Leek & Garlic Sausage Soup

Ingredients

• 1 cup (200g) dried small white beans
• 40 grams butter
• 2 bacon rashers (140g), rind removed, chopped finely
• 2 cloves garlic, crushed
• 1 leek (350g), sliced thinly
• 2 trimmed celery stalks (200g), chopped finely
• 2 carrots (240g), chopped finely
• 1 1/2 litres (6 cups) chicken stock
• 1 bay leaf
• 4 merguez sausages (320g)
• Pistou
• 2 cups loosely packed fresh basil leaves
• 1 clove garlic, quartered
• 1/4 cup (20g) coarsley grated parmesan cheese
• 1/4 cup (60ml) extra virgin olive oil