Chocolate Chip Fudge

4 c sugar
1/2 lb butter
1 large can evaporated milk
1/8 t salt
14 oz chocolate chips
1 pint marshmallow creme
1 t vanilla

Cook to a soft but firm ball, stirring most of the time. When it has reached the right consistenc, add the chocolate chips and the marshmallow creme. Beat until cool, and add the vanilla. Optionally add nuts, raisins, coconut, or peanut butter.