|Country of origin||Japan|
Sus scrofa domesticus
The Tokyo-X breeding effort was begun in 1990 by the Tokyo Metropolitan Livestock Experiment Station, combining bloodlines from the Duroc (USA), Berkshire (UK), and Beijing Black (China) breeds. Five generations of breeding and selection ended in 1997 when the breed went to market.
- "King of Iron Chef Tournament 1". Retrieved 2008-08-16.
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