These windmills are still working (mustard-grinding, artists' paint-grinding, etc.) and you can pay to see a demo and/or you can purchase their products.
Translated, this restaurant is called "The Hope of the Black Whale". I wanted to eat here, but it didn't open until fairly late and we wanted to catch the train back to Leiden.
There was a good-sized cheese shop in this row. Everything was out for tasting and the place was packed. I got smoked cow cheese, smoked goat cheese and a carroway-coriander gouda. They were all delicious and were fun to share with friends in the U.S.