This glorious gateau dates back to 1832, when it was created by Franz Sacher, a chef of the royal household in Vienna. It is rich and dark, with an apricot glaze and a rich, glossy topping.
Ingredients
150g/5oz/10tbspunsalted butter, plus extra for greasing
Preheat the oven to 180°C/350°F/Gas 4. Grease and line a 23cm/9in round deep cake tin (pan). Beat the butter with the sugar until fluffy, then add the egg yolks, one at a time, beating after each addition. Beat in the melted chocolate, then sift the flour over t