Beer-soaked brats are absolutely delicious, and a common type of brat loved by grill masters. This simple method just requires you to prepare a simmering pot of beer, butter, spices, onions, and whatever else you please while your sausages are on the grill.  Then, place brats in beer and allow to simmer for an extra punch of flavor. You can use the beer-braised onions to top your bratwurst as well!