I have not yet tried this, but it is from an overdue library book (From Our Mothers' Kitchens) and I want to return the book tomorrow, so need to get the recipes I want to try copied down, pronto. I would very much like to try this fudge, but I know I don't have the arm strength to pull it off. I may try it with my heavy-duty mixer; what's the worst that could happen? Anita Stewart, the author of the cookbook and the daughter of the recipe's originator, says you can use this recipe to make chocolate fudge: "Add 3 coarsely diced squares of semisweet chocolate to the final mixture to make a creamy chocolate variation."