Simple Seafood Barbecue Sauce

2 tablespoons olive oil1 tablespoon butter3 teaspoons bottled minced garlic1 can (14 ounces) chicken broth1 bottle (12 ounces) chili sauce (see note)2 teaspoons Cajun seafood seasoning (see note)2 teaspoons Worcestershire sauceHot pepper sauce to tasteIn a 2-quart saucepan, heat the oil and melt the butter on medium. Add the garlic and cook for 30 seconds. Add the chicken broth, chili sauce, seafood seasoning, Worcestershire sauce and hot sauce, if using. Stir well and raise the heat to medium high. Bring to a boil. Boil and stir occasionally for 5-7 minutes to reduce by one-third, and thicken.Remove the sauce from the heat and use. Or cool and refrigerate, covered, for up to 1 week. The sauce also can be frozen in small portions in freezer-weight plastic containers for up to 3 months. Defrost in the refrigerator and use within 3 days.To use the sauce: Brush on shrimp or seafood kebabs during the last few minutes while grilling over medium-low heat, until the seafood is done to personal preference. Additional sauce can be passed for dipping at the table.Makes about 2 cups.Cook's notes: Chili sauce is found alongside the ketchup in the grocery store. There are several brands, and for testing purposes, we used Heinz Chili Sauce. We used Paul Prudhomme's Seafood Magic as our Cajun seafood seasoning, but any brand will do.Nutrition values per serving: 23 calories, 1 g fat (trace amount saturated), 2 g carbohydrates, 1 g fiber, trace amount protein, 1 mg cholesterol, 210 mg sodium.