Never Fail Fudge

This recipe has been on the label of Marshmallow Fluff since after World War II.

5 cups granulated sugar
1 (12 ounce) can evaporated milk
1/4 pound butter or margarine
12 ounces Marshmallow Fluff
1 teaspoon salt
1 teaspoon vanilla extract
1 cup walnuts
24 ounces chocolate chips

Combine sugar, evaporated milk, butter, marshmallow cr