Roast the pimento berries in a dry skillet until they are fragrant, about 2 minutes. Remove and crush them to a powder in a mortar or spice mill. Place all the ingredients in a blender or food processor and puree to make a sauce. Store in the refrigerator; it will keep for a month or more. Source: "Heat Wave! The Best of Chile Pepper Magazine", by Dave DeWitt and Nancy Gerlach, 1995. The Crossing Press.