It's astonishing how buttery this cake tastes, given that there is not a gram of butter in it. The flour is replaced with ground almonds — and cooked, cooled, pureed fruit provides moistness and flavour. If you want a smaller cake, simply halve the ingredients and use a 20cm/ 8 inch tin. I don't find it takes appreciably less time to bake. For US cup measures, use the toggle at the top of the ingredients list.