INGREDIENTS
3
Eggs
1 3/4 cups
All-purpose flour
1 1/2 tsp
Baking soda
1/2 cup
Brown sugar, firmly packed light
1/2 lb
Chocolate, unsweetened
3/4 cup
Cocoa powder, unsweetened natural
1 cup
Granulated sugar
1/2 tsp
Kosher salt
4 tsp
Vanilla
28 tbsp
Butter, unsalted
1 cup
Buttermilk
2/3 cup
Water
2 1/2 cups
(10 oz./315 g) confectioners’ sugar, sifted