I don't smoke salmon anymore but when I did this was the recipe I used. I shared it widely and most who tried it liked it.
Indian Candy Smoked Salmon
1/2 cup coarse salt
2 cups demerrera sugar
2 cloves minced garlic
1 tbl spoon fresh cracked black pepper
1 tablespoon cayenne
1 cup teriyaki sauce
2 tablespoons Worcestershire sauce
1 cup apple juice
1 cup water
- combine the dry ingredients, add the liquid. Stir till salt is dissolved (using a hand mixer speeds this up).
Fillet fish then cut into 1 inch strips. Marinate fish for 6 to 7 hours or overnight. Hot smoke for 4 then heat till desired dryness is achieved (usually a total of 8 to 11 hours smoke plus drying seems to be right). Move drying racks in the smoker helps get an even dry product. How long you dry it is up to you.
The salt often won't dissolve but gets absorbed while marinating.
You can do a google search as well. The simplest brine recipe is just some combination of salt and sugar. Dry brines have become popular tough I never tried that.