For bargain organic meals on the run in a bun, Underdog is the surprise winner. Meats are USDA-certified organic, and smoky veggie chipotle hot dogs could make carnivores into fans of fake meat. Organic condiment options can be overwhelming, but the off-the-menu staff favorite combo is no-fail: any hot dog with barbecue sauce and housemade coleslaw. Gluten-free and vegan options available.