To make these Pork Potstickers gluten free, replace the all-purpose flour with a gluten-free dumpling wrapper dough or use certified gluten-free dumpling wrappers. Substitute the soy sauce with gluten-free tamari or certified gluten-free soy sauce. Check the dry sherry label to confirm it is gluten free, or replace it with gluten-free rice wine. Ensure all seasonings, including kosher salt and sesame oil, are processed without gluten cross-contamination. Gluten-free wrappers may be more delicate, so handle them gently when filling and sealing.