Pour 1/2 of the flour on fruit and stir until coated in large mixing bowl. Cream butter and sugar and add to fruit mixture. Add 6 eggs, one at a time. Add flour and baking powder and soda. Let stand 10 to 15 minutes. Pour into 6 (1-pound) greased coffee cans*. Cover cans with foil. Place in canner with water up to within 3 inches of the top of the cans. Cook on top of stove, checking for doneness after 2 1/2 hours, wiping the top of the foil dry.

*Also, makes 8 (11 1/2-ounce) Campbell's soup cans, shorter cooking time, 1 1/2 hours.