From ChibaWiki
- Costco is great, especially if you need cheese and don't want to pay a fortune for it.
- Jusco and Beisia supermarkets in larger cities and towns carry a lot of foreign food items that are hard to get at smaller, neighborhood supermarkets (ex. SPAM, gnocci, El Paso taco kits, Thai noodles, roast beef, cheddar cheese, cilantro).
- Yamaya is a wonderful, combination cheap-booze-and-foreign-food chain store with a few locations around Chiba.
- Carrefour is often cited as a good place for foreign foods because it's French, but it really doesn't have much more variety than you can find at one of the larger Jusco markets.
- The Foreign Buyers' Club A mail order business based in Kobe, they carry a wide selection and have affordable shipping rates.
- Kaldi Has a limited amount of foreign goods such as sausage, cheese, taco kits, salsa, and coffee.
- MEGA Don Quijote In Naruto. It's a massive discount store that also carries import food items not found anywhere else.
- There are various foreign food markets sprinkled throughout the greater Tokyo area. Here is a massive list of them
You may wish to see the "Where do I buy ~?" wikipage as well