For the orange sauce: – 1 cup orange juice – 4 tablespoons white sugar – 2 tablespoons soy sauce, (gluten-free if preferred) – 2 tablespoon cornstarch – 1 tablespoon fresh ginger, minced or grated (or ¾ teaspoon powdered ginger) – 3 cloves garlic, minced or pressed (or ¾ teaspoon garlic powder) – 1 teaspoon sesame oil – ½ teaspoon crushed red pepper flakes, (optional for spice) To cook the tofu: – 1 block (350 g/ 12.3oz) extra-firm tofu, drained (no need to press it) – 2 tablespoons cornstarch – 2 tablespoons light oil, (such as canola or vegetable) For garnish (optional): – 2 green onions, chopped – orange zest