I've done this with liver, then put it in a very casserole with spaghetti sauce and rice. Baked at 350 for one hr+ and threw grated cheese on top. They give the impression of being pretty inedible to me so i have eliminated them previously. it was a royal pain https://zaneyuhot.dailyhitblog.com/27433470/the-fact-about-frozen-beef-heart-that-no-one-is-suggesting