Combine Everything Above And Including Cornstarch, Mix Well. Heat Oil In Skillet, Brown Tempeh, Scallions, Garlic, Ginger, Carrot, Bell Pepper And Onion. Saute Until Tempeh Is Golden Brown. Reduce Heat And Add Sweet And Sour Mixture. Saute Until Ingredients Are Well Combined And Sauce Is Thickened About 1 Minute.