Method
1. Beat the butter
In a large bowl, using a stand mixer fitted with the paddle attachment or a hand mixer, beat the softened butter until smooth and fluffy.
2. Add the powdered sugar
Add the powdered sugar gradually, mixing on low speed until incorporated, then beating until smooth after each addition.
3. Add the flavorings
Add the maraschino cherry syrup, vanilla extract, almond extract, lemon juice, and salt. Beat until light, creamy, and evenly combined.
4. Adjust the consistency
If needed, add heavy cream, 1 teaspoon at a time, to loosen the buttercream. If the frosting is too soft, add a little more powdered sugar until it reaches a smooth, spreadable consistency.
5. Fold in the cherries
Fold in the finely minced maraschino cherries until evenly distributed.