Old Sour

Old sour is a unique American sauce that is especially popular in Key West and the Bahamas, where it is a staple found in almost every kitchen. It used to be made with bird peppers, key lime juice (or sour oranges) and salt, but today it is typically made with a fermented combination of lime juice and salt. Old sour pairs especially well with cooked or raw seafood or conch chowders, although it can also be used instead of vinegar or citrus juices as a salad dressing.