Though there are great efforts to reduce and prevent food waste from occurring, some food waste is unavoidable. Due to the continued creation of unavoidable food waste, the proper disposal and treatment of food waste is an absolute priority. This chapter outlines the “lower” downstream recycling, recovery and disposal aspects of the food waste hierarchy. Drawing upon previous reviews of the subject, this chapter describes the disposal route, and provides a summary of their current and future environmental consequences under different decarbonisation scenarios.