"This is best with very fresh, wild salmon. It's a spring-time tradition here in Olympia."
garlic, to taste
salt, to taste
onion, to taste
Fire up your grill.
Lay salmon on tin foil (enough foil to completely wrap fillet) Melt butter and pour it all over the salmon (alternatively, you can just cut it up but melting it will help it saturate the fish) Apply salt, garlic and onion to taste.
Seal the salmon in the foil.
Grill for about 15 minutes (depending on how hot your grill is), rotating after about 7 minutes.
Serve with salad, bread, wine, beer, good music, whatever.