I just looked at their list. I've had a number of their products. For Chinese-style mustard, I usually just add water to a heaping spoonful of Colman's dry mustard. It's probably not skinny-approved, but if it's good enough for the Queen, it's good enough for me.

For Chinese mustard I use left over take-out packets from egg roll purchases. Love Coleman's and occasionally use it for my version of dijonase which I use on ham and Swiss sandwiches. I grow my own horseradish which comes out of the ground hot as hell. 

https://www.imdb.com/title/tt0063821/