Heme is also what makes a burger taste like a burger. https://impossiblefoods.com/heme/ https://impossiblefoods.com/heme/ If you feed cows corn all day every d

Heme is also what makes a burger taste like a burger. https://impossiblefoods.com/heme/ https://impossiblefoods.com/heme/ If you feed cows corn all day every day, yes they need B12 injections. I buy beef from a local butcher and the beef comes from our local farm of pasture-raised cows. It's more expensive but because of this it limits my beef intake to a few times a month.