I haven't searched to see if they are unique or not but, here are a couple I like (tomato and vinegar based). My vinegar is kind of a bastardized version of eastern and western Carolina. I like a very small amount of ketchup in it, almost just enough to give it a little more color. I do bring the vinegar to a boil briefly, I feel it breaks the sugars down a little better, but that could be just a bunch of hooey.
Tomato Based
18 oz Tomato Paste
3 cups beef stock
3/4 cup worchestershire
3/4 cup yellow mustard
1/4 cup white vinegar
1 1/4 Tbsp Chili powder
1/4 cup sugar
1/2 tsp red pepper flakes
1 Tsp salt
1/4 Cup brown sugar.
Combines all ingredients and simmer at least 2 hours stiring frequently so it does not burn.
Vinegar Sauce
1 Cup Apple Cider Vinegar
1 Tbsp Salt
1 Tbsp ketchup
1/2 tsp Cayenne Pepper
1 tsp pepper flakes
1 tbsp brown sugar
1 tsp hot sauce
Bring to boil let cool.
Tomato Based
18 oz Tomato Paste
3 cups beef stock
3/4 cup worchestershire
3/4 cup yellow mustard
1/4 cup white vinegar
1 1/4 Tbsp Chili powder
1/4 cup sugar
1/2 tsp red pepper flakes
1 Tsp salt
1/4 Cup brown sugar.
Combines all ingredients and simmer at least 2 hours stiring frequently so it does not burn.
Vinegar Sauce
1 Cup Apple Cider Vinegar
1 Tbsp Salt
1 Tbsp ketchup
1/2 tsp Cayenne Pepper
1 tsp pepper flakes
1 tbsp brown sugar
1 tsp hot sauce
Bring to boil let cool.