Muslim-Style Rice Noodles with Beef and Tamarind

I learned this fabulous noodle dish from Ms. Nongkran Daks, cooking teacher, author of Thai Noodles and Snacks, and chef-owner of the acclaimed Thai Basil Restaurant, near Dulles Airport in Chantilly, Virginia. In this unusual southern-Thai specialty, coconut milk mellows the sweet-tart edge of tamarind, and the deep rich flavor and color of dark soy sauce play off the vivid green of Chinese broccoli. You could use fresh soft rice noodles cut into big fat ribbons if you hav