Beef tongue is delicious. You could try one of these: http://www.seriouseats.com/recipes/2012/05/grilled-beef-tongue.html http://www.geniuskitchen.com/recipe/delicious-crock-pot-beef-tongue-tacos-297549 Basically, you just braise it in water or stock until tender, and then peel it. I've always preferred tongue cold, sliced deli-thin, in sandwiches. This should help you out with the heart: http://www.seriouseats.com/recipes/2010/03/the-nasty-bits-beef-heart-4-ways-stew-seared-or-grilled-burgers-french-fries.html