It's true that Teflon offers the nonstick surface that is crucial for good wok cooking. However, it's also important to understand some of the downsides of this material before buying. One disadvantage of Teflon is that it does not stand up well to high heat. In fact, the nonstick coating can peel off when left too long over a hot burner. This is unideal for stir-frying, which often requires burners to be turned to their maximum setting for best results. However, if you're planning on using your large non stick wok for braising, boiling, or other applications, Teflon can be a good choice.