Turkey Time Trouble

Thanksgiving is upon us, and I have once again been bitten in the rump roast by the Law of Inverse Thawing: The more time you give a turkey to thaw, the less time it will take. I got a 15 pound bird--because, as counterintuitive as it may be, a 15-pound turkey was cheaper than the 4-pound boneless turkey roast I've been making for years--and set it in the fridge to thaw. Two days later, it's ready. Of course, had I given it only the recommended one-day-per-four-pounds, on Thursday morning, it would still have been a turkey-shaped block of ice.