Mr. Tea
Let's Talk About Ceps
Ah yes, another surprisingly enjoyable epic dealing at great length with an enormous-dicked (some kind of obsession with Clavell it seems) English hero and his battles with cunning eastern schemers.
See also Taipan, Noble House etc and to a lesser extent King Rat.
Haha, yeah, that's cropped up several times already.
Reminds me of the episode of South Park where some sort of Japanese consortium tries to buy out the whole town, or whatever, and whenever the locals try and stop them the Japenese guys just say "You Amelicans have vely big penis!", and the locals get so flattered and smug they forget what they were just talking about.
The power-politics-and-high-adventure-in-a-brutal-feudal-society theme reminds me strongly of Dune.