Ultimate Chocolate Cake

Name: Ultimate Chocolate Cake
Prep time: 30 min
Cook time: 2 h 15 min
Total time: 2 h 15 min
Yield: 12 slices
Ingredients: 200 g unsalted butter; 320 g caster sugar; 2 large eggs; 240 g plain flour; 50 g cocoa powder; 1 ½ tsp bicarbonate of soda; 1 tsp natural vanilla extract; 1 pinch fine sea salt; 120 g boiling water; 120 g milk; 150 g sour cream; 300 g double cream; 30 g icing sugar; 240 g fresh mixed berries; 450 g chocolate fudge icing, homemade; 80 chocolate cigarillos; 120 g fresh mixed berries