This sounds such a good idea Snadger. I've only just caught up with it - have been out of circulation for a few months (no, not at her majesty's pleasure - just busy). I remember seeing clamps for mangolds, turnips etc by the field gates here in Devon ready to take for feeding stock in winter.

I invested in a metal dustbin at harvesting time last year and it cost a darned sight more than your clam. It would be good to use the space at the lottie rather than the limited space at home. However, the spuds have kept fairly well in hessian bags(different varieties separate so I could compare keeping qualities) in the garage and am only now rubbing the shoots off of the last of the Charlottes to make into mash.

I'm hoping they're not toxic or anything once they are sprouting! Am looking to see whether they can frozen now.