What is "marshmallow fluff"?

Marshmallow fluff is a sweet and creamy confection that is made from sugar, corn syrup, egg whites, and flavorings. It has a light and fluffy texture and a sweet and indulgent flavor, similar to that of marshmallow. Marshmallow fluff is often used as a topping or filling for desserts, such as cakes, cupcakes, and pies, and can also be used as a dip for fruit or cookies. It is a popular ingredient in many American desserts, such as fluffernutter sandwiches, which are made with peanut butter and marshmallow fluff. Marshmallow fluff is widely available in grocery stores and specialty stores around the world. It is often used as an alternative to marshmallows in recipes, as it is easier to work with and has a longer shelf life.