Preheat your Z Grills pellet grill to 275°F. Combine brown sugar, dill weed, and a pinch of salt to form a dry rub. Adjust the amounts to your liking.
Gently drizzle extra virgin olive oil on the salmon filet and coat all sides (skin included). Then, generously coat the salmon filet with your dry rub.
Once the grill has reached the desired temperature, drizzle some more olive oil onto the grill grate and place the salmon on top of it, skin side down. Pour the remaining olive oil into a cast iron skillet and heat it on the back of the grill.
After 20 minutes, remove the salmon from the grill using a spatula. Increase the grill temperature to 350°F.
When the temperature has reached 350°F, quickly drop the fresh sage leaves into the hot oil. Fry the leaves until they turn bright green.
Remove the sage leaves from the oil with tongs, then place them atop the smoked salmon as a garnish. Wait for the filet to cool slightly, then enjoy!