A Twinkie is a "Golden Sponge Cake with Creamy Filling" created by Hostess, and baked by Continental Baking Co., which is owned by Kansas City-based Interstate Bakeries Corporation. Twinkies measure 4" x 1.5" (10 cm x 3.75 cm) and are usually sold in packages of two, though they can be sold in packages of three.
In the United States, the Twinkie is commonly regarded as the quintessential junk food. Each Twinkie contains about 145 Calories (607 kilojoules). Five hundred million are produced each year.