I think that winter squash has to be my favourite vegetable. It tastes great and stores well.
I'm not just talking about the butternut squash you buy from the supermarket, but all the other amazing varieties like Crown Prince, Sweet Dumpling and Turks Turban to name but a few. Some of these have a taste so far away from butternut you 'd think they were a different vegetable.
Half a Crown Prince
In the old days they used to keep them under the kitchen table. So long as you keep the frost off them they tend to keep fine. In fact they tend to like the same temperatures that people like, so bringing them into the house is all you need to do. We've kept them until may before now (but we normally run out way before then).
The ones that we managed to grow last year have been sat quite happily on the dining room window sill since the Autumn and they're still good to eat now. In fact we had one for tea tonight and it was great.
What's your favourite vegetable (for self sufficiency or otherwise)?