The Genmaicha reference article from the English Wikipedia on 24-Jul-2004
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Genmaicha

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Genmaicha (玄米茶) is the Japanese name for green tea combined with roasted brown rice.

The brown rice gives the tea a nutty flavor. The tea is said to help digestion, and is often served after a meal in Japan. Like green tea, genmaicha should be prepared using hot, but not boiling, water.