• Preheat the oven to 350°F (175°C). In a mixing bowl, whisk together the cake flour, baking powder, baking soda, and salt, then set aside for about 30 seconds. Slice 6 maraschino cherries in half and set them aside.
• In the bowl of an electric stand mixer fitted with a paddle attachment, whip the butter and granulated sugar together until the mixture is pale and fluffy. Add the egg, egg white, almond extract, and vanilla extract, and mix until well combined.
• In a liquid measuring cup, combine the buttermilk and maraschino cherry juice. With the mixer set to low speed, gradually add the flour mixture and buttermilk mixture in three batches, starting and ending with the flour mixture. Mix just until combined after each addition.
• Divide the batter evenly among 12 paper-lined muffin cups, filling each about halfway. Place a half cherry in the center of each cupcake (the cherry will sink during baking). Bake in the preheated oven for 18 minutes, or until a toothpick inserted into the center of a cupcake comes out clean.
• If necessary, run a butter knife around the edges of the cupcakes to loosen them, and allow them to cool in the muffin tin for 5 minutes. Transfer the cupcakes to a wire rack to cool completely, then pipe or spread Cherry Almond Frosting over the tops.
• Store the cupcakes in an airtight container. Just before serving, top each cupcake with a maraschino cherry.

For the frosting:

• In a mixing bowl fitted with the paddle attachment, whip the butter at medium-high speed until very pale and fluffy, approximately 8 minutes. Scrape down the sides and bottom of the bowl occasionally (if using a beater blade paddle scraper attachment, this may take 5 minutes).
• Add 1 1/2 tablespoons of maraschino cherry juice, powdered sugar, and almond extract. Blend at low speed until combined, then add food coloring and extra cherry juice to achieve the desired consistency (adding 1 teaspoon at a time). Increase the mixer speed to medium-high and whip for about 6 minutes longer (around 3 minutes with the scraper attachment).