Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
     1/3  cup           lime juice
     1/3  cup           olive oil
   2      tablespoons   tequila
   2      tablespoons   chopped fresh cilantro
   1      medium        glove garlic -- minced
   1      small         jalapeno pepper -- chopped
     1/4  teaspoon      salt
     1/4  teaspoon      pepper

Preparation:

Combine all ingredients. Pour over peeled jumbo shrimp or soft-shelled crab and refrigerate 2 hours before grilling. Brush marinade on while grilling.