Meringue powder is a shelf-stable blend made mainly from dried egg whites, often with sugar and stabilizers. It has a mild, slightly sweet flavor and a fine, dry texture; when mixed with water and whipped, it forms a light, glossy foam. Bakers around the world use it to make royal icing, meringues, and stable cake decorations, often as a convenient alternative to fresh egg whites. Traditional meringues are made from egg whites and sugar, while powdered versions offer a longer-lasting, easy-to-store option.