One method of cooking bratwurst we have seen has you actually steaming the brats in beer and then finishing on the grill. In our recipe we skip the initial steam bath and simply bathe the brats in beer while they are on the grill. GrillGrates are the only grilling surface that allows you to pull of this technique due to the unique flavor catching valleys between the raised rails.

doesn’t the beer run out the holes in the grates?
Some of the beer makes it past the grates but the vast majority evaporates.