Cake: • Unsalted Butter Softened, 60g + More For Greasing • High Quality Dark Chocolate Preferably Valrhona, • Sea Salt, • High Quality Instant Espresso Powder, • Egg Whites, 150g Approximately 5 Eggs • Cream of Tartar, • Demerara Sugar, • Egg Yolks, 100g Approximately 5 Eggs • Fillings: • Maraschino Cherries Canned, • Kirsch, •