Sauerkraut Soup

Ingredients:

• 2 tablespoons sunflower oil
• 1 large onion, diced
• 1 medium leek, white and light green parts only, finely sliced
• 1 medium carrot, diced
• 1 medium parsnip, diced
• 2 large garlic cloves, finely chopped
• 1/2 teaspoon caraway seeds
• 1 teaspoon dried marjoram
• 1 teaspoon allspice
• 6-8 juniper berries
• 2-3 bay leaves
• 400 g (1 lb) sauerkraut, drained
• 3 potatoes, peeled and cut into 1-inch cubes (about 500 g)
• 1.5 litres (6 cups) vegetable stock
• Salt and freshly ground pepper to taste