After decades of Thanksgivings, Bay seniors may think they tried every variation of turkey imaginable. I doubt, however, that many of you have ever carved a turkducken. This fabled fowl sounds like something out of a Roman orgy – a duck inside a chicken inside a turkey. And of course it’s available in the Bay Area – what isn’t?- at Cajun Pacific in San Francisco. All the birds are boned, free range and hormone-free and nested together with cornbread and rice stuffings. $165.