Preliminaries: Adjust oven rack to middle position. Preheat oven to 350 degrees. Procedure: In a food processor fitted with the metal blade, blend together the cheese and butter. Add the flour, cornmeal, cumin, cayenne and salt; process until the dough forms a ball. Divide the dough in half and roll each into 1-1/2 inch diameter cylinder. Wrap in plastic wrap and refrigerate until completely chilled, several hours or overnight. Cut the dough into rounds 1/8 inch thick and place on baking sheets. Bake in a preheated 350 degree oven 10 minutes, or until lightly browned around the edges. Immediately remove the crackers from the baking sheets and cool on wire racks. Presentation: Serve at room temperature. Store in airtight containers.