As everybody knows, oysters are the ultimate aphrodisiac. Casanova is said to have eaten 50 raw oysters every morning with his mistress of the moment, in a bathtub designed for two. Whether oysters truly have exciting properties is open to debate, but like all seafoods, they contain high amounts of phosphorus and iodine, which are believed to be conducive to stamina. Author and food expert M.F.K. Fisher wrote: "There are many reasons why an oyster...