The “1-2-3 Cake” is a charming vintage sponge cake recipe named for its simple ratio-based ingredient list: 1 cup of shortening, 2 cups of sugar, 3 cups of flour. With its light, fluffy crumb and adaptable base, this cake was a staple for everyday desserts and special occasions alike. Often topped with fruit, frosting, or a dusting of powdered sugar, it showcases the classic method of creaming fats and sugar, folding in beaten egg whites, and baking into golden perfection. Its straightforward ingredients and familiar preparation make it a nostalgic favorite in American home baking.