The Black Forest Gâteau of the nineties. At least half a dozen restaurants claim to be the originators of this incredibly popular pudding. The Ivy isn’t one of them. They do, however, make one of the best, layering the toffee with the sponge. In the restaurant the pudding is served individually. This is time-consuming and a bit fiddly, so it is recommended that you make a large pudding and cut it into individual servings.