INGREDIENTS
2
Eggs, large
1/2 tsp
Bicarbonate of soda
375 g
Castor sugar
50 g
Cocoa powder
1 tsp
Cocoa powder
25 g
Dark chocolate
175 g
Dark chocolate chips
200 g
Plain flour
1 tbsp
Vanilla extract
175 g
Butter, soft unsalted
80 milliliters
sour cream
125 milliliters
boiling water
125 milliliters
water