Like the fabled best seller about Lincoln's doctor's dog, this easy-reader fiddle book with a Thanksgiving theme should be a winner; unfortunately, and although the format here is unusually attractive for a riddle book, the riddles themselves are so feeble that they rarely evoke a chuckle, whether obvious (""What's the key to a good Thanksgiving dinner? Turkey""), forced (""Why can't you freeze cranberry juice? [The berries] just don't concentrate""), or pointless (""Can you beat [an elephant-sized egg]? Sure. With an eggbeater""). A few are almost funny (""Should you drink cranberry juice after a bath? . . .drink the juice, but [not] the bath""), but this is not a rewarding collection.