1 large garlic clove minced
2 tablespoons water
2 tablespoons plain vinegar or white wine vinegar
1 1/2 tablespoons lemon juice
1 tablespoon soy sauce
1 tablespoon light brown sugar
1/2 tablespoon dijon mustard
1/4 teaspoon red pepper flakes
Combine ketchup, garlic, water, vinegar, lemon juice, soy sauce, brown sugar, mustard, and red pepper in a small saucepan and bring to a boil. Reduce heat to a simmer and cook for 30 minutes, stirring occasionally. The sauce will thicken and reduce slightly. Let cool and then transfer to an airtight container. Refrigerate until needed.