Start with your crêpe ingredients; melt the butter and combine with all other ingredients in a mixing bowl and mix thoroughly. Keep to one side (the batter always works better when you let it stand for about an hour).
Make the crêpes - one after the other by adding 60ml of batter for each round, allowing it to cover as much of the surface of the pan as possible. Continue until all the batter has been used. Cool all of the crêpes immediately as it is unwise to try and work with them whilst they are still hot.
Add whipping cream to a mixing bowl, scrape in the inside of the vanilla pod into the mix as well as adding the 2 tbsp of castor sugar. Whisk until stiff and fluffy.
I cut the crêpes using the top of a round plastic container to get them looking a bit more even. Take these off-cuts and throw them into the oven at a low temperature and you can use them to garnish the cake later down the line. Layer the crêpes with the cream filling until you have a nice stack. Return to the fridge to stiffen up.
Put your heavy cream and sugar into a pot and bring to the boil. Place the dark chocolate in a bowl with the softened 2 tbsp of butter. Pour the boiling liquid over and allow to cool, mixing every now and again until a smooth velvet ganache develops.
Place the cake on a rack and pour the ganache over it. You could spend your time trying to get it all smooth, but this is a rustic cake by nature and always looks good regardless.
Garnish with the fruits and orange segments, 30g of grated or crushed dark chocolate as well as the crispy crêpe off-cuts you've made. Finish with a very light dusting of icing sugar.