Grease a ring cake tin (approx. 2.5 l capacity) well and dust with flour. Put crème fraîche in a bowl. Rinse the crème fraîche cup, dry well and use as a measuring cup.
Preheat oven (electric cooker: 175 °C/circulating air: 150 °C/gas: see manufacturer).
Vanilla sugar, 1 1⁄2 Place a cup of sugar, 1 pinch of salt and eggs in a bowl. Whisk with the whisk of the mixer until thick and creamy. Add oil and crème fraiche and stir in.
Mix flour, semolina, 1 cup of grated coconut and baking powder, add to the crème fraîche mixture, stir in. Pour the dough into the tin and bake in a hot oven for about 50 minutes. After approx. 35 minutes baking time, cover with aluminium foil if necessary.
Remove the ring cake from the oven and let it cool in the mould for about 20 minutes.
In the meantime, squeeze lemons for the syrup and measure out approx. 160 ml. Bring 1 cup of sugar and lemon juice to the boil, simmer for 2-3 minutes. Turn the cake out of the tin onto a cake rack. Place on a cake plate or large plate.
Prick more often with a skewer. Drip hot syrup slowly and evenly over the cake. Sprinkle with 1 tablespoon of coconut flakes.