Non stick coatings can stop release food and stick for these reasons: Use of high heat: we did not recommend high heat for non-stick pans or cookware products as this can cause the sticking. The pan conducts heat well at a lower temperature, so we highly recommend you to use a low or medium flame to preserve your non-stick pan coating. Use of cooking sprays: use cooking sprays to burns at lower temperatures and can burn into the non-stick coating, causing a build-up of the spray. It will damage and sticking to the non-stick coating and sometimes provides the cookware a rusty appearance.