The primary ingredient in fudge is sugar, specifically granulated sugar. Fudge is a type of confection made by combining sugar with butter and milk, and then cooking the mixture to a soft ball stage, typically around 234°F (112°C). The key to achieving that signature smooth and creamy texture involves careful stirring and aeration, often incorporating chocolate or other flavorings like vanilla or peanut butter. Different recipes may include other ingredients, such as marshmallow fluff or nuts, to enhance the flavor and texture. Once cooled, fudge can be cut into squares and enjoyed as a delightful treat.