I should mention that the Gourmet mustard is quite sweet. I like it that way but you can reduce the sugar if you like.
I also make mine in the microwave. I have a 750 watt microwave and I cook it one minute on high, whisk it well and then cook it twice at 2 minute intervals on 50% power, whisking it well at each interval.
Because it contains egg, I don't keep it longer than 3 months although I don't think I've ever had it last that long. I only make a half batch at a time.
