At the time of his 2009 interview, Emlen also said that U.S. standards allowed for coffee beans to contain up to 10% “insect filth and insects” — a fact that has been somewhat misrepresented. According to guidance issued by the FDA, an average of 10% or more of green coffee beans were found to be insect-infested, which included beans damaged by insects or mold.
That isn’t super encouraging that the standard is less than 10% any matter that isn’t coffee, including insect parts.