@2ck grinding is not too far from chewing, so if you had trouble with the latter you would probably be doing a lot of the former with a lot of stuff... mixing water with stuff is another remedy for chewing/swallowing troubles... and cooking, once you've accidentally or out of curiosity done it with one thing, you'll try to do it with everything...
strongjaw - chew grain, weakjaw - make dough
@namark that makes a whole heck of a lot of sense. for baby or granny, we'd mash and grind the tough stuff, maybe by mouth then with water and stone @izaya