Ingredients

Instructions

  1. In a medium saucepan simmer water, celery, onion, and caraway seeds until celery is very tender, about 30 minutes.
  2. Cool mixture slightly and in a blender puree in batches until smooth, transferring to a bowl.
  3. Stir in buttermilk and salt and pepper to taste.
  4. Chill soup, covered, at least until cold, about 6 hours, and up to 1 day (after that, it will lose its fresh taste).
  5. Before serving, season with salt and pepper, if necessary.