Birthday cake ~ chocolate cake with chocolate topping

Ingredients

• A)
• 200 gm butter
• 360 gm caster sugar
• 4 eggs
• 1.1/2 teaspoon vanilla essence
• B)
• 1 cup milk
• 2 teaspoons bicarbonate of soda
• C)
• 1 cup boiling water
• 2 teaspoons instant coffee of your choice
• D)
• 380 gm plain flour
• 1/2 teaspoon salt
• 6 teaspoons baking powder
• 80 gm cocoa/chocolate powder
• A pinch of salt
• E)
• Whole walnuts lightly toasted or strawberries
• 7 oz dark cooking chocolate
• 4.1/2 tablespoon water
• 1.3/4 teaspoon salad oil