In Bavaria, food waste is given a new life as biomethane. We visited the Greengas Altenstadt plant, where organic residues, including industrial waste and expired food, are converted into biogas and then refined into biomethane, which is fed into the public gas grid. The plant currently produces about 425 Sm³ of biomethane per hour. Besides renewable gas, digestate is also produced, an organic fertilizer used by local farmers. The next step? Liquefying biomethane to optimize logistics and close the sustainability loop.