Preheat the oven to 175 ° traditional heat. Butter and flour a mold 20 cm in diameter.
In a bowl, combine the milk and vinegar and set aside for about 10 minutes.
Beat the liquid ingredients: compote, coconut oil (melted), vanilla to have a rather frothy mixture.
Separately, mix the dry ingredients: flour, brown sugar, cocoa, baking soda, baking powder, salt.
Incorporate the dry ingredients into the liquid ingredients, alternating with the milk. The dough obtained must be homogeneous without lumps.
Bake for about 45 minutes, check doneness with a wooden pick. Let cool, unmold and let cool completely.
For the ganache, heat the cream in a saucepan then pour over the chocolate cut into pieces. smooth with a spatula and let cool until a spreadable consistency is obtained.
Decorate the cake with ganache using a spatula. Sprinkle with fleur de sel.
Notes
Can be kept for a few days in a bell or in the refrigerator.