Prep it: Preheat oven to 180C. Butter a 25cm-diameter springform cake tin and line the base and sides with baking paper.
The Base: Using an electric mixer, whisk egg white with pinch of salt until soft peaks form. Slowly add ½ cup sugar, whisking for a further 4 minutes until stiff. Fold in almond meal, orange zest and cocoa then spoon mixture into springform tin, smooth top and bake for 20 minutes). Set aside.
The Centre: Beat butter and remaining sugar with an electric mixer in a bowl for 5 minutes until pale. Add yolks one at a time, beating well each time. Stir in melted chocolate and orange juice, then pour onto the base and bake for another 25 minutes. Refrigerate for 3 hours to firm.
The Chai Ganache: Heat Chai Addict and cream in a saucepan to a boil. Remove from heat, add chocolate and stir until smooth. Pour over cake, smooth top. Refrigerate for 1 hour to set.
Serve it: Remove cake tin and paper. Garnish with orange segments and extra zest. Slice 10 pieces and serve.