Chocolate

1 cup softened butter, room temperature, 1 cup sugar, 1 large egg, 2 cups flour, ¾ cup of

100 gr brown sugar, 25 gr softened butter, 1 large egg, 250 ml flour, 10 ml baking powder,

6 egg yolks, 1 cup of sugar, 2 cups whole milk, 1 cup fresh cream, ½ cup bourbon (optional),

150 gr butter, ¾ cups brown sugar, 1 cup good quality cocoa powder, pinch of salt, 5ml vanilla