A new tab has been added by Google to its local panel for many restaurants. The new tab is for accessing the restaurant’s menu, and if Google can pic out the menu items from the restaurant’s menu, Google may show the tab in the search results.
This was first noticed Sergey Alakov, and I was able to replicate it myself. Here are some screenshots I took for a local restaurant that shows the menu tab next to the overview tab. When you click on the menu tab, a menu will appear:
Tabs in the local panel began being showed by Google about a month ago after being tested for some time.