In the first issue of Lucky Peach magazine (highly recommended, especially if you are interested in ramen), there is an article about Ivan Orkin, an American who runs a ramen restaurant in Tokyo. He has an instant version sold in Japan which sounds pretty good. I'm wondering if anyone has found it in the Bay Area, maybe at one of the markets near the Japan Center?
Chowhound discussion of Lucky Peach: http://chowhound.chow.com/topics/792184
Ivan Orkin's web site (English): http://www.ivanramen.com/top_en.html