I did not mention cooking at all in my AMCAS, but interviewers often asked me what I like to do for fun/hobby. I always said cooking and it usually started a nice conversation about it (how I got started, what I like about it, what I make, blah blah). I love playing video games, but I never mentioned it because I think it would seem more like a waste of time (which it mostly is even if it is fun.) Think of it this way, would you recommend that someone put watching TV as a hobby? That is how a lot of people view games.