Peanut Butter Fudge
["3 c. sugar", "1/4 c. dark Karo syrup", "1/2 c. milk", "1 Tbsp. vinegar", "3 Tbsp. margarine", "18 oz. peanut butter"]
["Cook until it forms a soft ball in cold water (about 235\u00b0 on candy thermometer). Remove from heat; add margarine and peanut butter. Beat until creamy.", "Pour in 11 x 7 dish. Cool and cut in squares."]
["sugar", "syrup", "milk", "vinegar", "margarine", "peanut butter"]