There are many lively markets in Siem Reap to explore, where you may mingle with the locals when they're out of their daily shopping. The Old Market is where the majority of tourists spend their time, but if you're looking for something a little more local, head out on route 6 to Psar Leu or Psar Samaki, as these are the areas where the locals live and work. In addition to being a terrific site to people-watch, it's also worth a visit if you're in the mood for some locally grown fruit, need some new fabric, or are looking for something else than the normal tourist trinkets. This is a once-in-a-lifetime opportunity for cultural immersion.
Alternatively, you can also check out the top restaurants in Siem Reap such as the fine establishments at the FCC Angkor for some replenishments.