Saltå kvarn is a lovely place to visit. They make - and sell - loads of ecologically farmed products, including flours and grains, beans, breads, dried fruit and much more. They also have a little café, which is absolutely wonderful. I was there with my good friend Anna and her two daughters a while ago, and we sat by the small stream and had lunch, and later, one of Saltå's famous vanilla buns. Yum!
Saltå is located in Järna, about half an hour from Stockholm city.