A delightful sugar-free condiment for burgers and the like:

Start w/ four or five nice shallots.
Whiz them to mush in food processor 

Add:  1/3 - 1/2 cup of tomato juice or V-8
          same amount of balsamic vinegar
          2 tsp. Chilie powder
          1 tsp. onion powder
          1 tsp. ground black pepper

Use food processor to whiz all together thorouly
Enjoy