Potato and Spinach Soup Vege Indian Cookbook. Ingredients - 6 potatoes (2 pounds) 2 tablespoons butter 1/2 tsp ground cardamon 1 tsp ground coriander 3 tablespoons shredded coconut 1/2 lb spinach 6 cups of vegetable stock 2 cups of whole milk salt and pepper 1/2 tbsp brown mustard seeds 1/2 tablescpoon gratted lemon sezt paprika or cayenne powder for garnish Method - Peel and slice the potatoes thinly. Heat 1 tbsp of butter in large saucepan. Add cardamon, coriander, and coconut and fry until the mixture is fragrent. Add spinach and potatoes and cook for 2 minutes. Pour in stock and bring to the boil. Reduce heat and simmer for 25 minutes until potatoes are soft. Remove pan from stove and stir in milk. Puree soup and season with salt and pepper Roast mustard seeds, butter and lemon zest in remaining butter. Pour seasoning into soup and reheat gently.