This very old recipe for fudge icing will raise your favorite brownies, sheet or bundt cake to the next level. It's a bit tricky at first and takes some practice, but please give this recipe a try if you are a chocolate lover. Pay attention to the timing during boiling and beating and the weather conditions (it will take longer to set up in hot,humid weather). Also, don't get discouraged if your first attempts don't turn out perfectly. Making candy (and this is a candy,basically) takes some…