I researched thoroughly and was hopeful that these pans wouldn't disappoint. Unfortunately within 3 months of use, both the pots & pans have released black particles into the food. I purchased these as a Christmas present for my mom and she is careful to only wash them by hand, as well as careful to not scrape the pans. She will no longer use them due to the scare of all the chemicals getting into our food. Huge disappointment.