The primary ingredient in marshmallows is sugar. Sugar is combined with other ingredients like gelatin, corn syrup, and water to create the sweet, fluffy treat we associate with marshmallows. The gelatin gives marshmallows their characteristic texture, while corn syrup helps prevent crystallization, ensuring a smooth, consistent product. These ingredients are whipped together to incorporate air, creating the light and airy texture that marshmallows are known for. Marshmallows can be enjoyed in various ways, including roasting over a fire, adding to hot chocolate, or as an ingredient in desserts like s'mores and rice crispy treats.