Chocolate Fudge
["2 sq. chocolate or 2 Tbsp. cocoa", "2 Tbsp. butter", "1/2 c. cold milk", "2 c. sugar", "1/3 c. white Karo", "1 tsp. vanilla", "nuts (optional) *"]
["*For variety, I sometimes use approximately 1/3 cup peanut butter instead of nuts."]
["chocolate", "butter", "cold milk", "sugar", "white Karo", "vanilla", "nuts"]