A brewing packet is provided for use in the preparation of hot or cold beverages. The brewing packet envelops a brewing ingredient chosen according to the tastes of a beverage drinker. The packet includes a machine interpretable feature that contains encoded data capable of being read by a beverage producing...http://www.google.fr/patents/US20020048621?utm_source=gb-gplus-shareBrevet US20020048621 - Encoded coffee packet
