how long to boil a bratwurst
1 Remove the bratwurst from the beer mixture; reduce heat to low, and continue cooking the onions. 2  Cook the bratwurst on the preheated grill, turning once, 5 to 10 minutes. 3  Serve with the beer mixture as a topping or side.irections. Prep. Cook. Ready In. 1  Preheat an outdoor grill for medium-high heat. 2  When hot, lightly oil grate. 3  Combine the beer and onions in a large pot; bring to a boil. 4  Submerge the bratwurst in the beer; add the red pepper flakes, garlic powder, salt, and pepper.