I moved to ED recently. I'm having a lovely time with my first ever garden. I'm even getting used to finding monstrous sized stag beetles (apparently ED is a hot spot for these endangered beasties)
I have recently dug up a tuber or mutant bulb . It's about 10 inches long and heavy. White and no sign of eyes or flowering but with healthy roots. I've not been able to identify it on the interwebs. Any keen gardeners like to have a guess?