I thought the ground beef was found to be like 30-40% beef and mainly whey? I vaguely have a memory of them being sued for something (maybe 10-15 years back), that coming out, then the “meat” being rebranded across the board as a material they now reference as “seasoned beef”?
At least where I was, when it came out it was $5 for the ‘six-dollar burger’, almost immediately after they threw in a bunch of other ‘big’ burgers. Odd that they tried to makr a 1/3 pound burger seem huge when McDonald’s (at least in America) had been offering double quarter pounders for longer than I can remember.