I'm not really sure how to ask this:
I build cream lather by putting a dollop in my bowl. I also don't rinse the brush, I leave it soaped up to reduce the amount of cream I have to use next time.
How do I build soap lather? I've put the soap brick in a bowl. Do I just build the lather on the brick leaving left-over lather is the bowl? Or do I swirl the brush on the soap and then build the lather in another bowl?