Bay seniors, after yet another taste 0f Thanksgiving fowl, may think they tried every variation of turkey imaginable. I doubt, however, that many of you have ever carved a turkducken. This fabled bird sounds like something out of a Roman orgy – a duck inside a chicken inside a turkey. Next year check out Drewes Brothers in Noe Valley to see if it is actually edible. For those with true red state tastes Cajun Pacific in San Francisco has a deep-fried turkey dinner for $250 (serves 10-12).