Heat oven to 180C/160C fan/gas 4. Grease your cake tin, and line the base and sides with baking parchment. Melt the chocolate, cocoa, sugar and butter together in a saucepan over a low heat. Once the chocolate and butter have melted and sugar dissolved, remove from the heat and stir in the ginger and almonds, followed by the egg yolks, one at a time.