Rock Salt

Rock Salt is a reagent.

Source
Rock Salt can be obtained as a drop, from gathering, as a quest reward, or purchased from a vendor.

Drops
Rock Salt can be obtained as a drop from the following mobs:
 * Gigantoad - Eastern La Noscea
 * Inflated Nix - Eastern La Noscea
 * Wivre Fodder - The Wanderer's Palace
 * Dreamtoad - East Shroud
 * Copperbell Nix - Copperbell Mines
 * Giggling Gigantoad - Western Thanalan
 * Heket - Western Thanalan
 * Laughing Toad - Western Thanalan
 * Nether Nix - Aurum Vale
 * Bone Nix - Dzemael Darkhold
 * Nix - Mor Dhona
 * Hull Nix - The Keeper of the Lake

Gathering
Rock Salt can be gathered by miners through quarrying. It is harvested from a level 20 node in the Nine Ivies in the East Shroud.

Quests
Rock Salt can be obtained as a reward from the following quest:
 * My First Skillet

Vendors
Rock Salt can be purchased for from the following vendors:
 * Engerrand - Limsa Lominsa Lower Decks
 * Jossy - Limsa Lominsa Upper Decks
 * O'rhoyod - Old Gridania
 * Esmenet - Ul'dah - Steps of Thal
 * Fridurih - Ul'dah - Steps of Thal
 * Traveling Material Supplier - The Azim Steppe
 * Shirakashi - Kugane

Uses
Rock Salt is used in crafting the following items: