Step #1 ---GLAZE------ 8 oz Bittersweet or semisweet -chocolate 250 g 1/2 c Whipping cream 125 mL 2 oz White chocolate 60 g preheat your trusty oven to 350F/180C.
Step #2 Butter a deep 9 inch/23 cm cake pan or springform pan & line the bottom with a round of parchment paper.
Step #3 Butter lightly again.
Step #4 To make cake, chop bittersweet chocolate & cut up butter.
Step #5 Melt together in a bowl over carefully simmering water.
Step #6 In large bowl, beat 1/2 c/125 mL sugar with egg yolks until light.
Step #7 stir in the warm chocolate/butter mixture.
Step #8 Mix in pecans & flour.
Step #9 In separate bowl, beat egg whites with cream of tartar until mounds begin to form.
Step #10 Slowly beat in remaining 1/4 c/50mL sugar.
Step #11 Beat until stiff but not dry.
Step #12 Stir one-third of egg whites into chocolate base to lighten it.
Step #13 Fold in remaining whites lightly.
Step #14 Spoon mixture carefully into prepared pan.
Step #15 Bake for 35 to 40 mins, or until a toothpick inserted into the center comes out moist but not runny.
Step #16 Cool cake in pan.
Step #17 Cake will be puffy & then fall, but don't worry.
Step #18 For the glaze, chop bittersweet chocolate & place this in a bowl over simmering water with the cream.
Step #19 Heat until melted & smooth.
Step #20 Allow to cool slightly.
Step #21 It should still be pourable.
Step #22 When the cake is cool, carefully push edges down so the top is flat.
Step #23 Turn cake out onto a serving platter that has a slight lip & leaves a 2 inch/5cm border around the cake.
Step #24 (The top of the cake has now become the bottom.
Step #25 ) Brush off any crumbs & pour glaze on top of cake.
Step #26 Rotate cake slowly so glaze coats top & sides & excess runs off cake onto platter.
Step #27 Melt white chocolate over simmering water.
Step #28 Pipe chocolate through paper cone or clean squeeze bottle into concentric circles over top of cake.
Step #29 Pipe one or two circles around cake in glaze on platter.
Step #30 With end of chopstick or dull knife, swirl white chocolate & glaze into small circles.