Only tangentially related, but the cheapest (by weight and per unit) type of hamburger patties at my local Costco this month are Impossible Burgers.

If you’re not familiar with these, they’re completely vegan, made from soy protein, but the texture and flavor is almost identical to beef. They cook like beef, taste like beef, and “bleed” like beef. And (for a few weeks, at least) they’re cheaper than beef.

That’s a new and exciting sandwich IMO.