Spaghetti with sour cream sauce

Ingredients

• 500 g spaghetti
• 2.5 l water
• 15 g salt for the cooking water
• 150 g butter
• 1 medium onion (150 g)
• 200 g ham
• 3 tablespoons butter
• 2 tablespoons flour
• 250 ml milk
• 100 g sour cream
• 1/2 teaspoon salt
• 1/4 teaspoon ground pepper
• 10 g parsley
• 100 g grated cheese
• salt for seasoning
• pepper for seasoning

Preparation

1. Bring 2.5 l of water and 15 g of salt to a boil. Cook the spaghetti for 10 minutes or according to the package directions, then drain. 2. Melt 150 g of butter in a pan. Sauté the onion, cut into thin strips, for 5 minutes until softened, then add the ham cut into thin strips and cook for 3 more minutes. 3. Melt 3 tablespoons of butter in a saucepan and stir in the flour. Gradually pour in the milk, stirring, then add the sour cream, 1/2 teaspoon of salt and 1/4 teaspoon of pepper. Simmer for 5 minutes until thickened, then add the chopped parsley. 4. Pour the sauce over the onion and ham and stir for 2 minutes over low heat. Add the grated cheese, taste and adjust the salt and pepper. Serve the sauce over the spaghetti.