Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   1                    onion -- chopped
     1/2  cup           butter
   2      cups          chicken broth
   1      large         zucchini -- cut in chunks
   1      bunch         celery tops -- 1 bunch
   2                    bay leaves
     1/4  cup           chives -- chopped
   3      tablespoons   fresh parsley -- chopped
   1      teaspoon      salt
   2      cups          buttermilk
   1      dash          cayenne
   1      tablespoon    curry to taste

Preparation:

Saute onion in butter. Add broth, zucchini, celery, bay leaves, chives, and parsley. Simmer until zucchini is very soft. Remove bay leaves, and puree in small batches with blender. Cool. Before serving add buttermilk, salt, cayenne, and curry to taste. Chill and serve cold.