| 1/2 | cup | onion | finely chopped |
| 1 | stalk | celery | chopped* |
| 2 | tablespoons | flour, all-purpose | |
| 1 | cup | vegetable stock | or chicken or beef |
| 1 | cup | milk, skim, evaporated |
Coat a medium sauce pan with cooking sprat. Add onion and celery, and cook until tender. Gradually sprinkle flour over mixture and stir until flour is browned, about 2-3 minutes. Stir in broth and evaporated skim milk.
Bring to a boil, reduce heat and simmer until thickened. For best consistency, strain through cheesecloth or a sieve. Season to taste with salt and pepper.