Irish Coffee Coffee Cake

Ingredients

• 1 3/4 cups (7 3/4 oz./220 g) all-purpose flour
• 1 cup (7 3/4 oz./220 g) firmly packed light brown sugar
• 2 tsp. espresso powder
• 1 1/4 tsp. ground cinnamon
• 1/2 tsp. kosher salt
• 10 Tbs. (1 1/4 sticks) (5 oz./150 g) cold unsalted butter, cubed
• 1 Tbs. Irish whiskey
• 8 Tbs. (1 stick) (4 oz./125 g) unsalted butter, at room temperature
• 1 cup (7 oz./200 g) sugar
• 2 eggs, at room temperature
• 2 cups (9 oz./250 g) all-purpose flour
• 1 1/4 tsp. baking powder
• 1/2 tsp. baking soda
• 2/3 cup (5 fl. oz./160 ml) whole buttermilk
• 1/3 cup (3 fl. oz./80 ml) Irish whiskey
• 3 Tbs. espresso powder
• 1 tsp. vanilla extract
• 1/2 tsp. coffee extract
• 1 Tbs. espresso powder