Many people think that beans are at their best on the second day, when they are served as refried beans. Philomena, who has a well-known restaurant of the same name in Los Alamos, recommends this classic method. To 2 tablespoons bacon drippings add 2 cups day-old cooked pinto beans. Use a potato masher for mashing and stirring beans as they fry. When beans are thoroughly hot, add 4 cup grated cheddar or jack cheese. Continue stirring until cheese has melted. Serve hot. Some New Mexicans also like to fry a small minced onion in the fat before adding the beans. Whatever method you use the resulting dish is delicious.