Janet, I’m so sorry I didn’t see your comment when you left it. I typically get notified by email, but I didn’t. Sous Vide is a method of cooking your food sealed in a plastic pouch, or “under vacuum”, in a temperature-controlled water bath. This method of cooking gives you results that are impossible to achieve with any other cooking technique. See all the info in this guide: https://www.artfrommytable.com/sous-vide-cooking-guide/