What is blancmange powder?

Blancmange powder is a culinary product used to make a traditional dessert known as blancmange, which is a smooth, creamy, and often gelatinous treat. It typically consists of cornstarch, sugar, and flavorings, sometimes with added milk or cream. When mixed with liquid and heated, the powder thickens, setting into a soft, pudding-like consistency upon cooling. It is often served chilled and can be flavored with vanilla, fruit, or chocolate.