Put it on your stove over low heat, and do not let the water boil.
Brats on the stove. You can reduce the heat further. Add the onions and the beer, turn the heat to high and bring to a boil. Chop an onion and cook the onion slices in some butter until they start to brown.
Make sure your oven rack is in the center position. Carefully lay bratwurst in skillet, it may spatter. Flip the sausages, add beer, cover, and cook on low heat, flipping again halfway.
Add brats and sear on each side for 3 minutes. Sear bratwurst for about 3 minutes per side, until it achieves deep golden brown color. To start, grab a deep pot and fill it with water.
Cook until dark brown, but not burnt. Cover the pan and simmer the bratwurst until it reaches an internal temperature of 160 degrees f (71 degrees c). Sprinkle with salt and pepper.
Next, add some mushrooms, cheddar, and black beans to the pan. Fill a pot full of water and add the bratwurst and bring to a boil. Use a plastic seal bag.
You are in good company. Bring the water to a boil and reduce the heat to medium low. This is one of the most traditional methods for cooking brats!