c self-raising flour

Self-raising flour is a pre-mixed flour product consisting of soft wheat flour combined with leavening agents—typically sodium bicarbonate (baking soda) and acid salts such as monocalcium phosphate or cream of tartar—along with salt. Originating in the late 19th century as a convenience product, it eliminates the need for home cooks to measure and combine separate leavening ingredients. The leavening agents are distributed uniformly throughout the flour, ensuring consistent rise and texture in baked goods. The flour used is typically lower in protein content than bread flour, making it ideal for producing tender crumbs in cakes, biscuits, and quick breads.

Self-raising flour is a time-saving ingredient widely used in quick bread preparation, particularly in British, Australian, and North American baking traditions. It is the primary flour for scones, soda bread, biscuits, pancakes, and simple cakes where chemical leavening (rather than yeast fermentation) provides the rise. Common applications include Victoria sponge, carrot cake, and cobbler toppings. The ingredient simplifies recipes by reducing the number of components and measurement steps; cooks need only add liquid, fat, and other flavorings without measuring baking powder separately. Self-raising flour is not suitable for yeast breads or recipes requiring precise leavening control, and it should not be substituted directly for all-purpose flour without adjustment.