We think of fudge as brown with a dominant flavor of chocolate and frequently laced with candied fruit or nuts. Just as brownies have a light-colored sister, called “blond brownies,” chocolate fudge has a blond sister, and it is called “penuche.”
The basic difference in chocolate fudge and penuche is their sugar. Chocolate fudge is made with white sugar, milk and butter; penuche is made with brown sugar. Divinity fudge, a third fudge, is lighter, is made with corn syrup, white sugar and egg whites along with the ingredients in the other fudges. We are concerned with basic chocolate fudge here.