In the cup or mug, add the MAYONAISE and mustard and enough sugar so that when you mix it, you see the sugar all in the mixture. I would say at least a 1/4c. or more. The amount of sugar and mustard is key here and while I hate to say this, I measure it by looking at it. You want it to be sort of a very light mustardy color that looks somewhat grainy if that makes sense.