In a Venn diagram of easy walk-in restaurants for groups and spots serving food worth crossing town for, Lers Ros fits right in the middle. The Thai restaurant (with additional locations in Hayes Valley and the Tenderloin) has a novel-length menu of noodle dishes, curries, and soups that pack so much flavor and spice you’ll mutter amazed expletives after every bite. It would take multiple months and a dedicated spreadsheet to make your way through the menu (which actually sounds fun). But you can’t go wrong with the stir-fried pork belly or coconut and lemongrass soup with prawns.