My husband (a born and bred Wisconsinite) has his own strong opinions on this subject. It's funny because our house is nearly meatless, aside from a couple times a year when then we tailgate at a Milwaukee Brewers game. Then, my husband makes some of the tastiest brats around.
Unlike other sausages, you can't just take them out of the package and throw them on the grill. They need a savory beer-bath first. Let me share it with you...
Chop a generous amount of onions, scallions, and peppers and throw them in a pot.
Then, you add a few cans of Guinness (I hear a gasp of horror coming from Ireland as I type this).
Pour in some regular beer (we keep it real Wisconsin with MGD) and Zatarains shrimp and crab boil spices.
Throw in the brats (note we boil on a propane burner).
Add a few more spices in the mix.
And start boiling...for like 2 hours. After that 2 hours, pull the brats out of the beer with tongs and brown them on a hot grill. Then, throw them back in the beer for 20 minutes...as my husband says "to juice back up". Grab a bun and garnish your juicy brat with whatever your heart desires. I myself like simply mustard and sour kraut.
All ingredients on this page are approximate. They need to be tailored to your taste. You can't really mess up unless you a.) over-boil them so they get tough or b.) add too much hot pepper flakes which is fine for some tailgate party guests, but not others.
I would LOVE to hear comments about the regional foods where you live!