Instructions

1. Melt the butter in a saucepan over low heat.
   
2. Add the flour and cook, stirring continuously with a whisk, until it turns golden.
   
3. Pour in 1 liter of water and bring to a boil. Add the tomato pulp and bring to a boil again. Season with salt, add the pasta, and cook according to the package instructions.
   
4. Meanwhile, cut the bread into cubes and toast them in a pan.
   
5. Once the pasta is cooked, turn off the heat, add the basil leaves, and pour in the milk or cream. Mix well and let the soup rest for 5-10 minutes.
   
6. Serve with the toasted bread cubes, a sprinkle of black pepper, and optionally, some grated cheese.