Vietnamese Iced Coffee Cake

Ingredients

• 2 1/2 cups all purpose flour 11.25 ounces or 319 grams
• 1 tablespoon instant coffee powder or ground coffee ,granules
• 1 1/2 teaspoons baking powder
• 1 teaspoon baking soda
• 1 teaspoon kosher salt
• 1 3/4 cups granulated sugar 12.25 ounces or 347 grams
• 2 large eggs at room temperature
• 1 tablespoon pure vanilla extract
• 1 cup sour cream 8 ounces or 227 grams
• 1/2 cup canola oil 4 ounces or 113 grams
• 3/4 cup coffee 6 ounces or 170 grams ,strong, preferably cold brew, at room temperature
• 1 1/2 cups unsalted butter 12 ounces or 340 grams ,at room temperature
• 1 teaspoon vanilla extract
• 1 pinch kosher salt
• 4 1/2 cups confectioner's sugar 18 ounces or 510 grams
• 6 tablespoons sweetened condensed milk 6 ounces or 170 grams
• 1/4 cup chocolate sauce 2.5 ounces or 70 grams
• 1 tablespoon strong brewed coffee preferably cold brew ,at room temperature