A friend who is the editor of a food magazine introduced me to these addictive dried mikan. These are sweet and tart at the same time. Tomizawa is a chain found throughout Tokyo. I come here to buy nuts, flour, dried fruit, and much more. If I am baking this is the first shop I go to as they have yeast, fondant, you name it. The dried mikan are great for hiking, traveling, and a healthful snack at home.
The main shop in Machida is fun, if you find yourself out there, but not worth a special trip as there are big shops in Tokyo. Shinjuku Keio department store has a big shop on the 8th floor. There are also small shops at Shinjuku Takashimaya, Coredo Muromachi, and Shibuya Toyoko Norengai depachika.