Minestra di riso e verza with borlotti

My grandfather held that a savoy cabbage is not properly ready until it has been frosted at least once.

He grew them in a strip of garden behind the house and refused to cut one before the first genuinely cold night of the year, on the grounds that frost turns the starch to sugar and takes the rawness out of it. I assumed for years that this belonged with the many other things he said with total confidence and no evidence, alongside his views on the moon and when to plant. It turns out to be true. Cold really does make brassicas sweeter, which is why savoy and cavolo nero and Brussels sprouts are all winter vegetables, and why the ones you buy in July taste faintly of nothing at all.

Savoy cabbage has a second property that matters more than it should, which is that it refuses to die in a fridge. A whole one lasts three weeks. You cut off what you need, put the rest back cut-face down, and it simply waits for you. For anybody shopping for one person that is close to a superpower, because almost everything else you buy is a countdown running quietly in a drawer, and the cabbage is not.

This soup is what my grandmother did with his cabbages, minus the piece of pancetta that always went into the pot first, and honestly it does not miss it. Borlotti beans bring the depth and all of the protein. The rice thickens the broth as it cooks. The cabbage collapses over half an hour into something sweet and silky that bears no relation to the squeaky green thing that went in.

It costs almost nothing, it makes four portions, and it is the specific variety of warm that makes a February evening survivable.