love me some beef heart!
I have yet to grind it up. I usually cube it up and sort of simmer it with
water, onion, thyme, black pepper, salt.
I am not sure what you are referring to by tough bits, I usually cut the upper portion off the veins? I mostly deal with sheep/goat hearts. If I remember correctly the cow heart has a sort of inner divider?
are you talking about all the heart fat? if so I leave that on...