I have been making this delicious recipe for years now, and just cannot get enough of it. The marinade is just remarkable with the smoke that is added during the grilling. Oh my, you are in for a treat. Just remember not to leave the marinade on too long, else you will end up with ceviche. I serve this to guests, and they always are amazed how good the salmon is. I have used all kinds of salmon, with equally great results. One note, I have never tried alder, only hickory, and maple. Alder is also a great smoking wood, however.