[theBCnut]

Beef heart is a dense low fat muscle, so adding it by weight, not volume is important, but just use it like a low fat meat.

As far as stocking up, the most important thing for storing meat longer in the freezer is that it be well wrapped. I like to double wrap when I expect stuff to be in the freezer more than 2 or 3 months. I’ve had double wrapped stuff stay very fresh for at least 8 months.