One of the most interesting things to do while traveling in Vietnam is to take a seat on a small plastic stool by the roadside and follow how the locals enjoy their meal. This way of eating culture can be seen throughout the cities in Vietnam including Hoi An.
Hoi An is an old town with plenty of delicious and inexpensive delicacies. And there are a number of specialty foods in Hoi An that you can hardly find them in any other cities of Vietnam.