There are many different recipes for steak sauce, but most contain some combination of vinegar, Worcestershire sauce, tomato paste, onion, garlic, and spices.
1. Make the raisin puree by combining the raisins with the water in a food processor or blender. Blend on high speed for 1 minute or until the puree is smooth. Measure 1/4 cup of this puree into a medium saucepan.
2. Add the remaining ingredients and whisk until smooth.
3. Turn heat up to medium/high and bring mixture to a thorough boil. Reduce heat to low and simmer, uncovered, for 1/2 hour or until thick. Let sauce cool and then refrigerate it in a covered container for at least 24 hours. (http://www.topsecretrecipes.com)
Makes 3 cups.