Burnt Leather Cake
["1 1/2 c. sugar", "1 c. butter", "3 eggs, separated", "3 3/4 c. sifted flour", "1 1/4 tsp. baking powder", "1 c. cold water", "1/2 c. burnt liquid, with 1 tsp. soda dissolved in it"]
["Burn 1 cup sugar in heavy cast-iron skillet until light in color and", "it", "foams.", "Very,", "very\tslowly,", "add", "1 cup hot water. Stir", "until", "sugar dissolves and cool (1/2 cup of this is used for", "cake).", "Cream\tsugar", "and", "butter together.", "Add yolks of eggs;", "mix well.", "Fold in beaten egg whites.", "Bake in 2 (9-inch) pans.", "Bake at 350\u00b0 for 45 minutes."]
["sugar", "butter", "eggs", "flour", "baking powder", "cold water", "burnt liquid"]