Marrow and Ginger Jam

Every August, somebody you know will leave a marrow on your doorstep. It will be enormous. They will not knock. This is how marrow season begins.

A marrow is a courgette that got away. Left on the plant a week too long, it swells into something pale and watery, more vegetable than vegetable should ever be. You can stuff it. You can soup it. Or you can do what allotment gardeners have done for generations and turn it into jam, which is, against all reasonable expectation, one of the more useful things in the larder.

The trick is the ginger. Marrow on its own tastes of almost nothing, which is exactly why it works here. It's a carrier. The crystallised ginger gives the jam its warmth and bite, the lemon gives it brightness, and the marrow itself, slow-cooked in sugar until the cubes turn glassy and amber, gives it a texture that no other jam quite has. Not quite preserve, not quite candied fruit. Somewhere in between, and better for it.

I wrote it down in the notebook the first year I made it: marrow, ginger, lemon, patience. The patience matters as much as the rest. You salt the marrow overnight, you bring the sugar up slowly, you let the pan boil hard until the kitchen smells like a Christmas market. Then you put it in jars and forget about it until the mornings turn cold and you need something gold to spread on toast.