Nigel Slater’s winter soup recipes

Kale with beans and sprout tops with stilton: how to use up leftover veg in a hearty soupThere is a white china bowl in the fridge, its contents hidden under a plate. With luck it will be buried treasure: the remains of a casserole; steamed potatoes and greens ready for bubble and squeak; a squirrelled-away apple crumble. It is a sad day when the contents turn out to be some of yesterday’s pasta.With luck, my dear old bowl will be full of soup whose character will have mellowed for having