Science Class Fudge - cooking recipe

Ingredients

2 Tbsp. butter or margarine
1 tsp. salt
1 2/3 c. sugar
1 small can evaporated milk
1 1/2 c. miniature marshmallows
1 1/2 c. semi-sweet chocolate pieces
1 tsp. vanilla

Preparation

Mix butter, salt, sugar and evaporated milk in saucepan.
Cook on medium heat. After mixture comes to boil, continue cooking for 5 minutes, stirring constantly.