I worked with a guy when I was in the Navy that wanted his hamburger raw. I mean raw, as in uncooked.
The mess cooks wouldn't give it to him raw. Said they had to cook it a little.
He asked them if there was a standard on how long it had to be cooked.
They said no, there was no standard.
He told them throw it on the grill for 1 second, turn it over and leave it for 1 second, and give it to him.
Everyone was happy.
My mother used to make "steak tartare" for my father every Thursday night. Raw hamburger, raw egg yoke, raw onion, raw anchovies, on a slice of toasted rye bread.
ML/NJ