Tiroler Nußtorte (Tyrolean Walnut Cake)

The first time I tasted a proper Nußtorte in Tyrol, I was maybe ten. We'd stopped at a Gasthaus somewhere between Innsbruck and the Brenner Pass, one of those places with a wood-paneled Stube and geraniums on every windowsill, and Gretel ordered a slice for the table. It was nothing like the Torten I knew from Eva's kitchen. Darker. Denser. The crumb had a colour like wet autumn earth and a grain to it that felt almost savoury against your teeth. That was the buckwheat. I didn't know it then. I know it now.

Tyrolean baking is mountain baking. Buckwheat grows where wheat won't, at altitude, in thin soil, through short summers. The Tyroleans didn't use it because it was fashionable. They used it because it was what the land gave them. Mixed with ground walnuts and bound with eggs, it produces a cake that has more in common with the forest floor than with a Viennese Konditorei display case, and I mean that as the highest compliment.

The technique is a classic Viennese separated-egg sponge, the same principle behind a hundred Austrian Torten. You beat the yolks with sugar until pale and thick, fold in the nuts and flour, then lift everything with stiff egg whites. But the buckwheat changes the rules. It has no gluten, so the cake won't rise the way a wheat sponge does. It stays low and close-crumbed, almost fudgy in the centre. You spread it with a thin layer of Marillenmarmelade, the apricot's sharpness cutting through the earthy richness, then pour a dark chocolate glaze over the top and let it set. The result is a Torte that belongs to the mountains. Honest, dense, and better than anything trying harder to impress you.