Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
  2             quarts  water
  1                     onion
  1                     garlic
  1                     celery
  2             pounds  shrimp shells

Preparation:

Combine ingredients in a stockpot, over a medium flame bring to a boil, reduce heat, and simmer for 4-8 hours add water as necessary to maintain 1 quart liquid strain, cool, and chill until needed makes 1 quart

Nutritional Information:

13 Calories (kcal); trace Total Fat; (3% calories from fat); trace Protein; 3g Carbohydrate; 0mg Cholesterol; 24mg Sodium