Armed with her seasoned wok, Ching He Huang crosses culinary borders when she visits Chef Chris Yeo at Straits Restaurant and Miguel Jara at La Taqueria. In San Francisco's colorful Mission District, she goes for full-fusion flavor with a Chino-Latino soon to be classic: Crispy Duck and Asian Pear Tacos. Will her dish pass the taco test? Recipes: Red Curry Chicken Stir Fry, Italian-Fusion Soba Noodle Salad, Crispy Duck and Asian Pear Tacos, Lychee Raspberry Apple Crumble