THE OLD-TIME DRINK, Switchel, frequently called by different names, was used as a thirst-quencher on the farm in days gone by. I have always known this special summer-time drink by the name of switchel. However, over the years it has acquired many names, possibly as many as the ingredients it was constituted with. A Dover reader recently phoned to inquire what the ingredients of switchel were. Having never made up a batch myself, I turned to Peter Farrow’s The Yankee Trivia Book, with the added sub-title: Rescued from Oblivion, published in 1985, by Lance Tapley of Augusta, Maine. Farrow wrote:...