Mont Blanc (モンブラン)

Chestnuts decide this cake before the piping bag ever appears. Mont Blanc looks like a pastry-shop trick, all those pale gold threads piled into a small mountain, but the work is more patient than difficult. Use chestnuts with real sweetness and the season has already done half the cooking for you.

The Japanese Mont Blanc we make here is not the French one copied blindly. It is the Tokyo version that settled into our autumn: a crisp meringue or sponge base, a little whipped cream, and sweet chestnut paste pushed through a fine-holed tip until it falls like soft noodles. The one detail that decides it is texture. Too stiff and the paste breaks into dry ropes. Too loose and it slumps. You want it smooth, cool, and just yielding enough to hold its shape.

Don't hurry the chestnuts. Simmer them until tender, then work them through a sieve while warm because warm starch gives way more kindly than cold starch. After that, the cream must be cold and the hand light. Pile the cake with height, not heaviness. Even a birthday cake should leave room to breathe.