For the brownie cake, grease a springform pan (26 cm Ø) and dust with flour. Melt the butter and let it cool down lukewarm. Coarsely chop 100 g chocolate and pralines separately. Mix flour, sugar, 35 g cocoa, baking powder, vanilla sugar and 1 pinch of salt in a bowl.
Beat the eggs with the whisk of the mixer for 5-7 minutes until frothy. Let the melted butter run in and stir in. Stir in the flour mixture first and then the crème fraîche. Fold in the chopped chocolate.
Spread the dough into the mould. Bake in the preheated oven (electric cooker: 175 °C/circulating air: 150 °C/gas: see manufacturer) for 25-30 minutes. After 8-10 minutes baking time, sprinkle approx. 1⁄3 of the pralines evenly on the tart and finish baking.
Remove from the edge of the mould and allow to cool in the mould. Remove from the springform pan and place on a cake plate.
For the filling, whip the double cream until stiff, spread on the brownie base and chill for about 30 minutes.
For the chocolate icing, break 125 g of chocolate into pieces. Melt with cream and white fat in a small pot while stirring at low heat. Allow to cool down briefly and if necessary, chill briefly until the icing is thicker.
Spread on the tart and refrigerate for at least 1 hour. Before serving, sprinkle the Daim cake with the remaining chopped chocolates and sprinkle with a little cocoa.