In a food processor (blender) chop and blend together onion, cucumber and soup. Add yogurt and buttermilk. Move mixture to a sauce pan and simmer, stirring occasionally, for 20 minutes. Chill at least 4 hours before serving. Garnish with fresh mint leaves or dill.
- 1 1/2 c cucumber, peeled, sliced
- 2 Tbsp onion
- 1/4 tsp dill
- 1 can cream of celery soup
- 1 c buttermilk
- 1/3 c plain yogurt
- Fresh mint or dill for garnish, optional