When I make a hamburger at home I use beef I ground myself from a lean cut. First I remove obvious extra fat and discard. I NEVER BUY GROUND BEEF OF ANY KIND.
However, for several years I've stopped grinding beef. When I make a "hamburger" (let's just call it a burger), I make it with Nature's Burger:
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Some years ago a roommate prepared some of this to fry and the aroma was so terrific I had to try it. Been buying it by the carton for years.