Dallas BBQ Sauce recipe

Source: Dallas BBQ, New York, New York

1 cup onion
1 cup catsup
1/2 cup water
1/4 cup fresh lemon juice
1/4 cup red wine vinegar
1/4 cup Worcestershire sauce
2 teaspoons brown sugar
1 teaspoon prepared mustard
1/2 teaspoon ground cumin
1/2 teaspoon kosher salt
1/4 teaspoon liquid hot pepper sauce
1/2 teaspoon black pepper

Combine ingredients in a saucepan, over a medium flame bring to a boil, reduce heat, and simmer for 1 to 2 hours, until reduced by about one-third and thickened remove from heat. Puree in food processor or strain out onion, cool, cover and chill for 4-6 hours.