Substitute Ingredient Finder

Ingredient substitution isn't a free trade - every swap changes something. Replacing buttermilk with milk plus lemon juice (1 cup milk plus 1 tablespoon lemon juice, left to curdle for 5 minutes) works perfectly in pancakes and scones. The same swap in a buttermilk fried chicken brine works less well because you lose the slow tenderising effect of cultured dairy over hours. The finder lists ten common ingredients with their best substitutes plus the ratios.

Baking is the unforgiving one. Cakes, biscuits and bread rely on chemistry: leavening agents, fats melting at specific temperatures, proteins setting at others. Swapping butter for olive oil at 1:1 in a Victoria sponge gives you something inedible. The correct ratio is 3/4 cup oil per 1 cup butter to compensate for the water content butter contains - and even then the texture is denser. Cooking is more forgiving because heat and seasoning cover most sins.

A few swaps come up so often they're worth memorising. One egg becomes 1/4 cup unsweetened applesauce in baking (good for muffins and quickbreads, not custard). One tablespoon cornstarch becomes two tablespoons plain flour for thickening sauces, though the flour gives a slightly cloudier finish. Heavy cream swaps to coconut cream or evaporated milk depending on whether you want richness or a lighter result. Vanilla extract scales 1:1 with maple extract, or 1/2 teaspoon almond extract per 1 teaspoon vanilla.

Test substitutions with small batches before committing to a dinner-party recipe. The finder gives you starting ratios; your specific oven, brand of flour and measuring style will tweak the final result. For unit conversions when the substitute uses different measurements (cups vs grams, teaspoons vs millilitres), use the [Baking Conversion Calculator](/baking-conversion-calculator) alongside this tool.