Ammo Reservation Potion

The Ammo Reservation Potion is a buff potion which buffs the player with Ammo Reservation. The buff reduces the chance of consuming any ammunition by 20%. This lasts for 7 minutes, but can be cancelled at any time by right-clicking the icon.

Trivia

 * Could be a reference to "Call Of Duty" First-Person-Shooter game, since one of the ingredients for crafting this potion is a Double Cod.