This recipe is adapted from a special edition of the June 5, 2021 Gastro Obscura newsletter. Some food and drink is particularly suited for travel. Sometimes it’s a coincidence, like how ginger ale and tomato juice taste way better at altitude. Other times, they’re designed to be portable. Hamburgers and French fries aren’t great after a few hours, but American fast food was tailor-made to be eaten inside a car. The absolute best travel meal is one that combines form and function, that’s cheap and filling, doesn’t need to be…