Tables fill and refill at Bambu Thai-Asian Cuisine in Richardson, where the menu is broad, encompassing the usual curries, tart-sour soups, and noodles, but specialties come from the northeastern, rice-growing Isaan region. These Lao-influenced dishes speak with simple, direct power; look to chalkboard specials or ask a server to steer you. Above all, start with rounds of grilled Isaan-style sausage, studded with sticky rice, aromatic with kaffir lime and lemongrass, and funky from several days curing.