Recipe for chestnut fondant:
Grind the chestnuts in a meat grinder or blender into a fine purée.
If the chopper is used, it will be necessary to grind with the fine grid.
Put the chestnut purée in a bowl, add the sugar, vanilla, soft butter and almond powder.
Mix well and add the cognac.
Then add the egg.
Bake at 150 degrees for 45 minutes.