My brother loves me to make this potato salad for him. He even offers to pay me if I make it for him when he's entertaining guests! All of our friends, and family love it too. They all think they won't, because there's no mustard, until they try it, and then, they're hooked! I hope t he amounts are accurate. This recipe could be used with mustard instead of vinegar, but the sugar wo uld have to be cut in half or more. It would probably take about a half cup of mustard. I would just add it until it tasted right! It is difficult to give measurements, when you never use them. :-) Please let me know how it turns out for you! The yield and time may not be precise; I just gave it my best guess.