Mix the ground almonds and icing sugar with 40 g of egg whites. Cook the sugar and water at 121°C (250°F) then gradually add this mixture to the 50 g of egg whites whisked until stiff. Add the Italian meringue to the mixture. Pipe out the macaroons onto a baking tray. Leave for 1 hour to form a crust, then bake at 150°C (302°F) for 7 minutes, then at 130°C (266°F) for 7 minutes.
Roll out to a thickness of 5 mm. Cook in a rectangular mould 58 X 9 X 2cm at 160°C (320°F) until golden brown,
Infuse the vanilla pods, split and scraped, in the Elle & Vire Professionnel® Sublime, Cream with Mascarpone. Strain and bring to the boil. Pour in the sugar and egg yolks. Cook at 85°C (185°F). Remove from the heat, add the gelatine, bloom in water, and blend. Leave to rest in the fridge for 12 hours at 4°C (39.2°F). Beat everything together using the whisk attachment. Fill a yule log mould ( 53,5 X 8 X 6). Iinsert the white chocolate ganache, finish to fill up. Freeze it.
Unmold the Yule log, decorated with macaroon shells and chocolate decorations.