How can one effectively preserve wine after the bottle has been opened? Coravin has a solution. The company has transformed wine conservancy. An elegant-looking pump is placed over the neck of a bottle. At its core is a Teflon-coated, medical grade needle with holes on the sides. The low-friction needle swiftly glides through the cork, allowing the user to dispense a pour of wine. A lever on the top opens a valve that shoots inert argon gas into the bottle at high pressure, filling the space freed by the liquid. Once the user is finished and removes the Coravin, the cork swiftly reseals. Since its debut in 2013, thousands of the devices have been sold worldwide.