INGREDIENTS
2
Eggs, large
1/2 tsp
Baking powder
1/2 tsp
Bicarbonate of soda
150 g
Caster sugar
50 g
Cocoa powder, best-quality
300 g
Dark chocolate, best-quality
130 g
Muscovado sugar, dark brown
225 g
Plain flour
2 tsp
Vanilla extract
125 g
Butter, soft unsalted
175 g
Butter, unsalted
250 milliliters
boiling water
125 milliliters
water