A simple, efficient, instant, and easily portable wine cooler, the Ravi does away with the need for ice buckets or refrigeration. Simply insert the Ravi into the bottle neck as you would a cork, and pour. The wine is chilled instantly as it passes through an inner, frozen stainless-steel tube. No time or energy is wasted since it’s not the bottle that is cooled, but the wine itself. The more time wine spends in the Ravi, the colder it gets. Since not all wines are enjoyed at the same temperature, Ravi has a valve that controls the rate of flow of wine in order to regulate the temperature. Store the Ravi in the freezer when not in use. It will be efficient for an entire bottle of red wine and stay efficient for 90 minutes once out of freezer.