Right now the best I can find for pucks is Amazon 120 pack
https://www.amazon.com/dp/B000BO4GNM/?tag=wranglerorg-20
For me I treat Salmon as simply as possible. Simple brine of one cup pickling salt and two cups brown sugar per gallon of water. Cut the fish into 1/2ish pound chunks and give them 90 minute soak then rinse and rack. Pat dry and hit with fan until pellicle has formed. Do not rush this step or you will be negatively rewarded with fat leakage. Since I use frozen salmon (as a means of making use of older fish in the freezer) I usually end up with some leakage as freezing breaks down some of the proteins but I do not sweat it.
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Once the pellicle has formed into the smoker. I use Alder pucks (of course I am a PNW native) and start at 90f and work my way up to a max temp of 140f. You will want some puck savers as I normally run about five hours on smoke (you may want only four if you do not want it too strong) but I have gone as much as six if I cram the smoker a bit tight. Keep the smoker at 140f max until the fish is done. You can do it by instant read thermometer and after a few batches you will be able to do it by feel. You want it to be firm but not overly dry.
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Once they are done I let cool, vac pack keep a small amount in the fridge and freeze the rest. Because this is not a cured or brine and dry method refrigeration or freezing is required.
This makes a simple product that is all about the fish and some smoke. It is great to snack on, crumble over Caeser salad, or make Salmon dip. One of these days I should take the time to do some dry brining and some of the other more traditional methods but I need to be a bit less busy.