I am trying to put together a wet shaving set for my boyfriend for Christmas. I have researched everything right and left and can't seem to figure out the difference between mugs, bowls, shaving vs. lathering. While they all seem the same, I did pick up on some tips not to actually lather up in the same container as the soap. However, I received an Edwin Jagger shaving mug with soap in it. The bottom of the mug is also designed to keep the soap elevated. So is this mug just for storing soap? Lathering up would have to be done on the hand or straight on the face? Do I need to get an extra lathering bowl? Can somebody help me out, please?