Dish of the Week: Banh xeo Vietnamese food is one of the quintessential DIY cuisines. Drizzle a little of this or that sauce. Scatter some herbs. Choose some vegetables. You control the sweetness, sourness, spiciness and crunchiness. And one of the best examples is banh xeo, a golden-colored crispy rice crepe loaded with pork, shrimp, and bean sprouts. It is seasoned very gently with tumeric and salt to maximize personalization though some recipes include touches…