Aug 1, 2013 · Pre and post-consumer food waste generated in PSU's dining facilities was the largest fraction of the composting mixture (Table 1).There were no specific measurements on the food waste generated, but it is likely similar to the average food waste composition quantified by MassDEP (2002) as 50% fruit and vegetable matter, 40–45% a combination meat (including poultry and fish) and bakery