purslane

That's great Monbiot! 21 vegetables freely available to Albion's wintertime gourmands and all but two or three are basically leaves.

n.b. you forgot nettles and grass.

Wow. And because of some weird digestive thing, I can't eat a single one of those, except onions. I love the words though!

"In her book How to Eat, the celebrity chef Nigella Lawson dismisses concerns about long-distance transport thus:
'If you live in the Tuscan hills, you may find different lovely things to eat every month of the year, but for us it would mean having to subsist half the time on a diet of tubers and cabbage, so why shouldn't we be grateful that we live in the age of jet transport and extensive culinary imports? More smug guff is spoken on this subject than almost anything else.'
Lawson's requirement for asparagus in October plainly takes precedence over other people's requirement for survival. But she also betrays a limited imagination. Rocket, lamb's lettuce, purslane, winter cos, land cress, kale, leeks, chicory, pak choi, choi sum, mizuna, komatsuna, mooli, winter savory, coriander, parsley, chervil, spring onions, spinach, sorrel and chard will grow through the winter in the United Kingdom. Some need cold frames or cloches to protect them from the lowest temperatures, but none requires a heated greenhouse."
- 'Heat', George Monbiot.