I cover the pan a let it be for about 5 minutes. Toss well before adding the mushrooms and bean sprouts. If you have seafood, add it before you add the fruit. Add the fruit last, and only to warm it through. Mandarin oranges will break apart.
Pineapple is more sturdy.
My personal preference is to use chicken and Shrimp. You can always tell when shrimp are done when they turn that pretty coral pink color. Under no circumstances, do NOT substitute Baking Powder for Baking Soda. They are not Interchangeable. But believe it or not, a good dose of Baking Soda will help those beans for Ham and Bean Soup break down faster.