– 200 g (7 oz.) dark chocolate – 250 g (9 oz.) unsalted butter – 180 g (6 oz.) castor sugar (fine sugar) – 4 large eggs – 2 tablespoons chocolate powder – 1 teaspoon baking powder – 1/2 teaspoon baking soda – 220 g (8 oz.) cake flour, sifted – 250 ml fresh full milk Ganache Topping: – 200 g (7 oz.) dark chocolate – 1/2 cup heavy whipping cream – 50 g (2 oz.) unsalted butter Other Optional Toppings: – Strawberries – Powdered sugar