Start with a fresh salmon fillet, ensuring it is properly cleaned.
In a bowl, mix kosher salt, brown sugar, black pepper, and optional spices.
Coat the salmon fillet evenly with the mixture.
Wrap the salmon in plastic wrap and refrigerate for 12-24 hours.
After curing, rinse the salmon under cold water to remove excess salt.
Pat the salmon dry with paper towels.
Preheat your smoker to 225°F (107°C).
Place wood chips in the smoker for flavor.
Smoke the salmon for 1-2 hours, checking for desired doneness.
Once done, let it cool before slicing and serving.