Burger
Hamburgare
71°CRest 3 min
Cook to this all the way through
Mince is not steak. Cook it through.
Safe minimum 70°CLivsmedelsverket
On the grill
Grinding spreads surface bacteria right through the patty, so a burger cannot be served rare the way a steak can. Press a dimple into the centre so it stays flat instead of doming.
Your February cook is the caution: 20 briquettes plus 10 lumps for 8 mm patties was, in your words, sjukt varmt. Thin patties want a moderate fire and about 3 minutes a side.