Alabama White Sauce - made famous by Big Bob Gibson's Bar-B-Q
(traditionally for BBQ chicken but works really good on fried chicken as well)
There are many versions out there - they are all pretty darn close with just a few tweaks to suit the individual palette. The original is supposedly still 'secret' but I think that it's more a marketing gimmik.
Anyway if you want to read about it Here is the story ...
http://www.amazingribs.com/recipes/chicken_turkey_duck/big_bob_gibsons_white_sauce.html
Great site also!
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Here is the favourite one from Chris Lilly's book on Big Bob Gibsons Bar-B-Q.
Big Bob Gibson's Bar-B-Q White Sauce
2 cups mayonnaise
1 cup distilled white vinegar
1/2 cup apple juice
2 teaspoons prepared horseradish
2 teaspoons ground black pepper
2 teaspoons fresh lemon juice
1 teaspoon salt
1/2 teaspoon cayenne pepper
In a large bowl, combine all the ingredients and blend well.
Use as a marinade, baste, or dipping sauce.
Store refrigerated in an airtight container for up to 2 weeks.
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This is the one that MeatHead reverse engineered... and Chris Lily said he'd have to try.
Recipe
Makes. 1.5 cups of sauce, enough for 2 large chickens or 3 Cornish game hens, which serves 4 to 6 people
Preparation time. 10 minutes for the sauce, about 45 minutes to cook the meat
Ingredients
3/4 cup mayonnaise
1/3 cup apple cider vinegar
1/4 cup lemon juice
1/4 cup apple juice
1 tablespoon powdered garlic
1 tablespoon prepared horseradish from a jar (either in vinegar or creamy)
1 tablespoons coarsely ground black pepper
1 teaspoon mustard powder
1/4 teaspoon salt
1/2 teaspoon finely ground cayenne pepper
Method
1) Whisk together all the ingredients in a large bowl and refrigerate in a jar for at least 2 hours, if possible, to allow the flavors to meld.