When you say "inverted S", you mean barbecue! ! ! ! Bringing fire is a combination of microwave and barbecue, which means that the microwave oven will barbecue for a while while while working! Combination points: combination one, group two! There are three combinations! In these combinations, there is still a microwave state, and metal things can't be put in! ! ! But you can use a metal grill when you barbecue! ! Remember: don't put plastic utensils when barbecue, or you will burn yourself! ! I do Galanz after-sales! ! !