Strawberry and Buckwheat Upside-Down Cake with Whipped Buttermilk - The Local Palate

Ingredients

• 2 sticks unsalted butter, softened
• 2 tablespoons honey
• ½ tablespoon bourbon
• 1 ½ cups brown sugar, packed
• 1 teaspoon vanilla extract
• 1 ⅓ cups cake flour
• ⅓ cup buckwheat flour
• 2 ½ teaspoons baking powder
• 1 stick + 2 tablespoons unsalted butter, softened
• ½ cup sugar
• Pinch of salt
• ½ tablespoon vanilla extract
• 3 whole eggs
• 2 tablespoons milk
• 2 pints strawberries, sliced
• 1 cup heavy cream
• ¼ cup buttermilk
• ¼ cup powdered sugar