Abstract: An air vent tube for liquids and beverages allows air to flow into a bottom portion of a container from which the liquid or beverage is poured. This reduces agitation and congestion that occurs when air attempts to flow into the container opening at the same time the liquid is attempting to flow out of the container opening. The air vent tube is a single open tube with no moving parts that assures the pressure inside the container is equalized with the ambient air pressure. The air vent tube is especially useful, for example, for pouring carbonated beverages from bottles. The air vent tube saves time, reduces the risk of overflow from foaming or head, reduces costs, and results in a more aesthetically appealing pour.