Condensed Cream Soup

2 tablespoons butter
2 tablespoons flour
2 tablespoons minced celery, onion or mushrooms
1/3 cup dry milk powder
2/3 cup vegetable broth (or chicken broth or water)
Salt & pepper
Melt butter in a small saucepan. Sauté whichever vegetable you are using in the butter until tender. Then, blend in flour and whisk until smooth. Add dry milk powder and broth or water. Whisk over medium heat until mixture thickens. Season to taste with salt and pepper.