I didn't know what the they where but somebody gave me some and I just peeled it, cut it up and steamed it, but you could totally throw this into all sorts of casseroles, soups, roasts or hangi it's really nice! Not too strong of a flavour kind of like a potato with a celery-like tinge, 10/10 will have more often ๐
Update: apparently they turn to mush if you roast them
Asian supermarkets will have them, if you have any in your area. We use them a lot in soups and stuff in winter.
Hmm I wonder if now I know what they look like I might see them at the weekend markets. I'm sure I've seen things I didn't recognise labeled as "squash", I'll have to check next time I get a chance.