|200g unsalted butter
||Pour into a lined cake tin, bake in moderate oven 50–55 minutes, or until a piece of spaghetti inserted in the center comes out clean. You may need to cover the top with foil for the final 20 minutes to prevent burning.
||Cool in tin 15 minutes, then turn onto wire rack. Once completely cool, wrap it in greaseproof paper then foil, and leave for a day or two.