Today’s recipe takes great liberties with the base for the classic Sri Lankan aubergine pickle, wambatu moju, in which deep-fried aubergine and onions combine with turmeric, vinegar, chilli and pickling spices to create a moreish side dish. Here, I’ve used the same pickling spice base, but combined it with tomatoes and beans for protein, to make a lovely, flavour-packed weeknight curry.