Having a dinner party outdoors? Using a gas propane tank to deliver the oomph to your cooking? Weblog Chow shares a quick way to estimate just how much propane is left in your tank, less you end up with a half cooked chicken. First, disconnect the tank from your grill and pour a glass of warm water along one side of the tank.

The areas with propane will absorb the heat from the water and feel cold to touch and areas without propane will feel warm. It's not the best tool for an exact measurement, but knowing whether or not you have a full tank is assuring enough.

Check out the video below: [Chow]