Whiskey Barbeque Sauce

1 small onion, diced
4 cloves garlic, minced
1/2 cup whiskey
2 cups ketchup
1/4 cup vinegar
2 Tbsp. tomato paste
1/4 cup Worchestershire sauce
1/3 cup brown sugar
2 Tbsp. liquid smoke
1/2 tsp. pepper
1/2 tsp. salt

In a medium saucepan, combine onion, garlic and whiskey. Simmer over medium heat for about 7 minutes or until onion is translucent.
Add remaining ingredients and simmer for 20 minutes.
Puree in food processor or blender.
Refrigerate for at least 1 day to blend flavours.
Leftover sauce freezes well.

Makes about 3 cups

Adapted from Bourbon Whiskey Barbeque Sauce at AllRecipes.com