Street food used to be something that would excite mainly backpackers in Bangkok. But nowadays we live in an era when hawker stalls in Singapore earn Michelin stars and food trucks draw devoted followings of foodies. One of the world’s best cities in which to explore such mobile cuisine is Portland, where “pods” of high-quality carts cluster in various neighborhoods. And one of the best ways for a non-Portlander to find the most-exciting options among the city’s 500-plus trucks is by taking a tour with Eat Adventures Food Tours.