Roux

Ingredients

• 16 brownies
• 170 g (1 1/2 sticks) unsalted butter
• 300 g (1 1/2 cups) sugar
• 84 g (1 cup) Dutch-process cocoa powder
• 3/4 teaspoon fine sea salt
• 3/4 teaspoon baking powder
• 3 large eggs, cold
• 1 teaspoon vanilla extract
• 1/2 teaspoon almond extract
• 2 Tablespoons Kirsch
• 135 g (1 cup plus 1 Tablespoon) all-purpose flour
• 125 g (about 3/4 cup) plus 85 g white chocolate chips or roughly chopped white chocolate, divided
• About 350 g fresh or frozen tart cherries