Sweet Potato Soup

Ingredients

• 2 stalks celery, chopped
• 2 leek, chopped
• 2 cloves garlic, chopped
• 2 tbsp vegetable oil
• 1 - 1 1/2lb / 450 - 675g sweet potatoes (2 large potatoes) peeled and chopped
• 2 pints / 1.1 litres vegetable stock
• 6 oz / 175g ground almonds
• 5 fl oz / 1/4 pint / 150g milk
• 1/2 tsp or to taste Chilli Ground
• 1 tsp Coriander Ground
• 1 tsp Cumin Ground
• 2 tsp Poudre de Colombo
• 2 inches Cinnamon Sticks or 1/4 tsp Cinnamon Ground