Do not. I repeat, do not crank the heat to “volcanic” and walk away. That’s how you end up with a sausage that looks perfect on the outside but is basically a sad, cold pillow on the inside. We’re not making charcoal here; we’re making dinner. You want a brat that’s juicy, snappy, and doesn’t require dental surgery to chew.
The average bratwurst, fresh from the store, needs about 20 to 25 minutes total if you’re using a medium heat grill. That’s about the time it takes to argue with your partner about who forgot to buy mustard. It’s also the exact length of a single episode of a sitcom you’ve already seen.