Big Batch Bran Muffins

1 cup Crisco
2 cups sugar
5 cups flour
4 cups Kelloggs All-Bran
2 cups Nabisco 100% bran
2 cups boiling water
1 teaspoon salt
5 teaspoons soda
1 quart buttermilk
4 eggs
1 pound raisins, optional

Pour boiling water over 100% bran. Let stand while sugar and shortening are creamed. Add eggs and buttermilk. Add both brans and let stand while sifting flour, salt and soda. Add raisins and flour mixture. Refrigerate for as long as a month if desired. Bake at 375' for 20 minutes. Mixture yields 4 quarts of mix.