Score the vanilla pod lengthwise and scrape out the pulp. Cream 175 g butter, white sugar and vanilla pulp with the whisks of the mixer. Stir in first eggs one after the other, then buttermilk.
Mix flour, baking powder and 50 g of grated coconut, stir in briefly. Preheat oven (electric cooker: 175 °C/circulating air: 150 °C/gas: see manufacturer).
Line the bottom of a square springform pan (24 x 24 cm; alternatively round, 26 cm Ø) with baking paper. Cut a strip (approx. 9 x 90 cm) for the edge of the tin and place it all around the greased edge of the tin.
Put the dough into the mould and smooth it down. Bake in a hot oven for 20-25 minutes.
For the icing, boil 100 ml of water and dissolve the coffee powder in it. Add 75 g butter, 100 g grated coconut, brown sugar and caramel syrup. Melt at low heat.
Take the cake out of the oven and immediately spread the icing on top. Continue baking at the same temperature for about 8 minutes and remove. Let it cool down for about 30 minutes, then remove from the mould and let it cool down.
Cut into 3-4 cm cubes and serve with orange-cherry compote as desired.