Dinner Tonight: Senegalese Curried Carrot Soup Recipe

Name: Dinner Tonight: Senegalese Curried Carrot Soup Recipe
Ingredients: 6 tablespoons unsalted butter; 1 small onion, finely chopped; 3 cups roughly chopped carrots; 3 cups chicken or vegetable stock; 2 teaspoon good-quality, fresh curry powder; 1.5 cups milk (or cream, for a very rich taste); Salt and pepper to taste; Thick yogurt as garnish