MAKE THE DIPPING SAUCE: In a small saucepan, whisk together the cornstarch and 1/4 cup water until combined. Whisk in the tangerine juice, vinegar, sugar, Aleppo pepper, and sriracha; bring to a boil, stirring continuously, and cook until thickened, about 2 minutes. Stir in the tangerine zest and remove from the heat.