Carnation Fudge

My mom, Florence Richards from Titusville, Pennsylvania, always made this fudge every Christmas and gave to my four brothers and I, along with other goodies.  If you like thick fudge, double the recipe.  You can substitute 13 miniature marshmallows for 1 regular marshmallow.  This is a mild chocolate fudge recipe.  

2/3 cup Carnation Evaporated Milk (5-oz. can)
1 2/3 cup white granulated sugar
1/2 teaspoon salt
6-oz. Nestles semi-sweet chocolate morsels
16 large marshmallows, cut into quarters
1 teaspoon vanilla

Lightly butter an 8x8-inch pan.  In a 4-quart saucepan, combine the milk, sugar, and salt.  Heat to a boil and boil for 5 minutes, stirring frequently.  Remove from heat and add the marshmallows, chocolate morsels, and vanilla.  Stir with a large spoon until mixture starts to set up.  Spread in a 8x8-inch buttered pan.  Let sit until fudge hardens.  You do not need to refrigerate.