As a certified journeyman silversmith, I can easily make silver and gold jewelry and set stones in it... however, I would definitely find it difficult to teach you how to do it because it's just difficult to teach anyone such a thing for me.
As a trained chef with a wide variety of experience under my belt and plenty of leadership experience, I could teach you how to cook because I've done that already.
These two IRL examples hopefully give an idea to what I'm suggesting with the teacher feat. Just because you're a master of the trade doesn't mean you're a good teacher of that trade. I can make you a diamond wedding ring, but I couldn't figure out how to teach you to do it. I can make you a seared rare fillet mignon on a steel cut oat risotto in a red wine reduction espagnole, and because I've taught someone how to make such a thing I'm fairly confident I could show most people how to make that dish.
The d&d example for brewing and magic is the book version, my personal version is little more in depth and I'm more than willing to PM that to you if you'd like to hear it. As for the timing on where we're agreed, I'm all for a reasonable time that the coders feel fits into the game best. If 5 secs is a good fit, go for it, if it's 15 secs, by all means make it so ensign.
All in all, we're beginning to see the same side of the page which is good! It means we've hashed something out without resorting to rock/paper/scissors/lizard/Spock and /I told you so/'s.


