Thai chili sauce

1 can (8 oz.) tomato sauce,

3 tablespoons firmly packed brown sugar,

2 tablespoons chopped garlic,

1 teaspoon chopped fresh serrano chili,

1/4 cup vinegar,

1 1/4 cups golden raisins, and 1/3 cup water;

whirl until raisins are coarsely chopped. Pour into a 10- to 12-inch frying pan. Stir sauce over high heat until reduced to 1 1/2 cups, about 10 minutes. Serve warm, at room temperature, or cold, adding salt to taste.