INGREDIENTS
227 g
bittersweet chocolate
57 g
dutch process cocoa
2 tsp
instant espresso powder
1 cup
water
222 g
flour
200 g
granulated sugar
100 g
light brown sugar
1 tsp
salt
1 tsp
baking soda
227 g
sour cream
1/2 cup
vegetable oil
4 larges
egg yolk
1 tbsp
white vinegar
2 tsp
vanilla extract
133 g
granulated sugar
4 larges
egg whites
1/4 tsp
salt
340 g
unsalted butter
340 g
semisweet chocolate
1 tsp
vanilla extract