You have to be careful ... if the vines trail on the ground they are prone to taking root. It is a thug of a plant ...
If you don't mind leaving the skins on, then the thin mishaped and new potato sized tubers you get, alongside the decent sized ones, may be suitable for cooking whole. In my case, 'er indoors, insists that peeling anything in the way of root vegetables requires slicing at least half an inch off the outside (drives me mad but keeps my worm farm well fed) so they end up like matchsticks !!