If you are looking to experience the street food of Hanoi, start your exploration with a guided food tour. Learn a bit about the food, then with your new knowledge, dive into the delicious scene on your own!
Vietnam. "Cruise around Halong Bay in a vintage-style wooden boat on the milky turquoise sea. Take in limestone karst islands and floating fishing villages. Excursions include kayaking and hiking for 360-degree panoramas (indochinasails.com)."