How to Grill Brats

Brats fail in a specific and recognizable way: the casing splits, the fat pours into the fire, the outside chars, and the middle is still raw. Every part of that comes from one mistake — cooking them over direct high heat from the start.

Indirect first, direct last

A bratwurst is a thick tube of ground meat inside a casing that shrinks as it heats. Over a hot fire, the outside cooks and the casing contracts long before the center is anywhere near done. Pressure builds, the casing gives way, and you lose the fat.

Cooking over indirect heat solves it. Set the brats on the cooler side with the lid down and let them come up to temperature gently for 15 to 20 minutes, turning now and then. The interior cooks through without the casing being shocked. Then move them over direct heat for the last few minutes purely to brown — by that point they’re nearly done and the casing is far less likely to burst.

The beer bath

Simmering brats in beer and onions is a Wisconsin tradition, and it works — but the order matters. Simmer gently before grilling to bring them most of the way to temperature, then grill briefly to color the casing. Or grill first and hold them in a warm beer-and-onion bath afterwards, which is how they’re served at stadiums and is excellent for a crowd because it keeps them hot without drying.

What doesn’t work is boiling them hard. A rolling boil bursts casings just as effectively as a hot grill does. Keep it at a bare simmer.

Never prick the casing

The instinct to prick sausages to “let the steam out” is exactly backwards. What comes out is the rendered fat and juice, which is the entire reason a bratwurst tastes better than a lean sausage. Pricked brats reliably come out drier, and the fat you released causes the flare-ups that char the outside.

If brats are splitting, the answer is lower heat and more indirect time, not more holes.

Temperature

Fresh bratwurst is raw ground meat, so it carries the same 160°F USDA safe minimum as a burger — grinding distributes surface bacteria throughout, which is why searing the outside isn’t sufficient. Pre-cooked or smoked sausages are a different case: they only need heating through.

A thin-probe instant-read thermometer goes into the end of a brat lengthways without leaving a hole in the side, which is the neatest way to check without undoing the work of keeping the casing intact.