A Japanese occupational therapy center has devised a canned bread product that stays fresh for three years without preservatives:
The group devised three flavorful recipes–chocolate chip; raisin and fruit; and a coffee, fruit and nut concoction. To ensure high quality, the bakers have the pH levels and level of moisture in cans checked monthly. Currently, the bakery produces only 500 cans a day, but it hopes soon to double that output.
(via We Make Money Not Art)