Substance added intentionally or unintentionally that (1) makes food
unfit for human consumption
, such as animal droppings, biocides, disease causing microorganisms or insects, dust
, pests, and other foreign bodies or impurities, (2) is added only to increase the bulk
of food, such as water in milk and starch in ketchup, or (3) is food but is in wrong place, such as a bean in can of peas.