Every year our local bar has a St. Pat's party and they serve corned beef sandwiches with a homemade hot mustard that is amazing. I asked the owner and he said he makes it himself. The only secrets I was able to get out of him is that he uses Coleman powdered mustard and beer. I having a St. Pat's party at home this year and would love to make my own hot mustard like the one at the bar. Can anyone help me with a recipe? Thanks!