Pour 2 tsp. of coarse salt into the cast-iron skillet, and scrub the salt onto the sticky area of the skillet in a circular motion.
Wash off the skillet's surface with hot water. Wipe up excess moisture with a paper towel or soft cleaning cloth.
Pour 1 tbsp. of vegetable oil into the skillet, and evenly distribute the oil over the entire surface of the skillet.
Preheat the oven to 350 degrees Fahrenheit, and insert the skillet in the oven for one hour. The heat from the oven restores the non-stick surface to the skillet.
Remove the skillet from the oven with an oven mitt. Place the skillet on top of the stove until it cools.