BH= Beef Heart
I purchase pre-trimmed BeefHeart from Stater Bros. I trim it sommore when I get home and run it through my Meat Grinder.
Along with BH, I will also mix in a pound of deveined shrimp, spirulina flakes, spirulina powder, astaxanthin, and crushed vitamins, crushed garlic, sometimes peas and spinach. Mix em' up and regrind them again. Oh..one envelope of gelatin binder..non flavored.
Freeze them up in 1lb baggies. My fish love it. It dirties your water a bit so I don't feed them BH all the time.