Make two vacuum sealer bags each long enough to hold a full salmon fillet
Combine the salt, sugar and vodka ... I use a stand mixer to do this. Divide the mixture in half. One Portion for each fillet.
Lay the bag out flat and sprinkle about 1/4 of the portion in the bag in a salmon fillet sort of shape.
Place the fillet skin-side down on the salt. If you move it around a bit it makes sure all the skin gets salted.
Spread the remaining 3/4 of the portion over the top of the fillet. Use your hands to make sure all the fillet has salt on it. the salt should be thicker over the thickest part of the fillet.
Vacuum seal the bag.
Repeat for the second fillet.
Leave for 2 hours to cure in your curing fridge (you do have one ... right!)