That's a decade ago, "right now" things have changed, at least partially : https://chemtrust.org/wp-content/uploads/PFAS-UK-food-packaging_CHEMTrust_May2021.pd

That's a decade ago, "right now" things have changed, at least partially : https://chemtrust.org/wp-content/uploads/PFAS-UK-food-packaging_CHEMTrust_May2021.pdf https://chemtrust.org/wp-content/uploads/PFAS-UK-food-packag... A rule of thumb seems to be that oil drop test : PFAS make fibers grease-repelling. Of course it could also just be from a very thin (and much less toxic I assume ?) layer of polyethylene that those non-recyclable "paper" cups seem to use ?