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["Place oven rack in lower third of oven, heat oven to 375 degrees F (190C).", "Butter and flour bottom and sides of an 8 inch (20cm) springform pan, put aside.", "Melt chocolate with 1/2 cup (125ml) butter.", "Keep chocolate warm over a pan of warm, tap water.", "Beat egg yolks in large mixer bowl at high speed, gradually adding 3/4 cup (180ml) of the sugar.", "Beat until yolk mixture is pale yellow and thick, 4 to 6 minutes.", "Add chocolate mixture to the yolk mixture, beat until completely smooth.", "Add creme de cacao and vanilla, beat until blended.", "Beat egg whites in medium mixer bowl at high speed until soft peaks form.", "Gradually beat remaining 1/4 cup (60ml) sugar into whites, continue beating until stiff but not dry peaks form.", "Fold whites gently but thouroughly into chocolate mixture.", "Pour batter evenly into reserved pan, smooth top.", "Bake 15 minutes.", "Reduce oven temperature to 350 degrees F (180C),bake another 15 minutes.", "Reduce oven temperature to 250 degrees F (120c), bake 30 minutes longer.", "Total baking time is 1 hour.", "Turn oven off, prop open oven door and allow cake to remain in oven for 30 minutes.", "Remove cake from oven and cover top with damp paper toweling, let stand 5 minutes.", "Remove toweling and cool cake completely.", "Dome of cake will crack and collapse, this is normal - press top of cake down lightly to smooth topRemove springform and transfer cake to serving platter.", "Whip cream in chilled mixer bowl on high speed until soft peaks form.", "Continue beating, gradually adding 1 1/2 tablespoons (22ml) of the powdered sugar until stiff peaks form.", "Dust top of cake with remaining powdered sugar just before serving.", "Serve cake at room temperature with whipped cream.", """This flourless cake rises light and lovely in the oven, then comes back down to earth as it cools to create a moist unique chocolate cake, moist textured and intensely flavoured."""]
