Fat always up. Try this with a briskit, at temp, pull it, foil it, take it down to high 30's as quick as possible, this obviously has to be done 1 day or so in advance. A couple of hrs. before eat time, electric knife or whatever, slice cold, lay slices in a warm beef broth bath, not too hot as you don't want to cook it anymore, simmer til desired temp, you'll love the results !