Hi-Ether

The Dry Ether, sometimes known as Hi-Ether or Ether2, is an item in the Final Fantasy series. It restores alot of MP. It is generally more effective than a normal Ether, but not as strong as a Turbo Ether.

Final Fantasy
The Dry Ether appears in the Dawn of Souls and 20th Anniversary version of the original Final Fantasy. The first one available is a rare drop by the Lich. Others must be found in the bonus dungeons.

Final Fantasy IV
Dry Ethers restore 100 MP. They can be bought or found as drops by enemies.

Final Fantasy IV: The After Years
Dry Ethers restore 150 MP to one target. They can be taken from the Tiny Mage enemy.

Before Crisis -Final Fantasy VII-
Hi-Ethers restore 200 MP. They can be bought for 500 Rank Points.

Final Fantasy XI
Hi-Ethers, originally titled Ether2, are obtained a variety of different ways, such as crafted with the appropriate skill in Alchemy, purchase from an NPC vendor, or as rewards for special events like Assault or Burning Circle fights. There are four different varieties of Hi-Ethers: Hi-Ether, Hi-Ether +1, Hi-Ether +2, and Hi-Ether +3. The plus amount signifies a higher quality, with +3 being the best version, though other ethers exist that restore more MP. There also exists a backpack called a "Hi-Ether Tank" that dispenses a Hi-Ether on demand (up to 20 times per tank), found sometimes from Assault.

Final Fantasy XII
The Hi-Ether is not purchasable from shops, rather, it can only be acquired via treasure chests or synthesizing loots from the Bazaar. The ingredients of Hi-Ethers are: Foul Liquid x2, Slime Oil x4, Unpurified Ether x2. It is known as "Flask of Viscous Liquid" in the Bazaar and costs 12000 Gil. The amount of MP restored using the Hi-Ether depends on the Ether lores accessed.

Final Fantasy Tactics
Hi-Ether can be used as a ability for the Chemist job class.