Pumpkin Soup with Sweet Potato

Ingredients

• 4 tbsp olive oil
• 1 onion
• 1 leek
• 1 sweet potato
• 500 g pumpkin
• 700 ml vegetable broth
• 70 ml fresh orange juice
• ½ tsp salt
• ⅛ tsp pepper
• ½ tsp ginger
• 50 ml milk