Creamy Potato, Apple and Parsnip Puree

Ingredients

• 1 tablespoon vegetable oil
• 1 onion, diced
• 2 garlic cloves, crushed
• 3 ounces of parsnip, medium cubes
• 1 cup chicken stock
• 1 cup water
• 1 potato, cubed
• 1 teaspoon pepper
• 1 teaspoon paprika powder
• 1 teaspoon sumac
• 1 teaspoon curry powder
• 1 apple, peeled cubed
• salt
• sour cream