Chocolate Cake, Flourless, Torta de Capri

Preheat oven to 300 degrees. Butter an 8″ round springform cake pan and line bottom w parchment. Finely grind half the almonds in a food processor. Set aside. Coarsely grind remaining almonds and chocolate. Use electric mixer to cream butter and sugar until pale and light. Add egg yolks one by one. Beat in nuts and chocolate. Whisk egg whites util they form soft peaks. Fold a quarter of the chocolate into still chocolate mix, then fold this into remaining whites. Pour int prepared pan and bake until toothpick comes out clean (45-60 min). Let cool in pan.

Butter 1/2 lb unsalted plus more for pan
Almonds 3/4 lb blanched whole
Chocolate 3/4 lb bittersweet
Sugar 1 c + 2T
Eggs 5 large, separated