01 - In a medium mixing bowl, beat together powdered sugar, softened butter, vanilla extract, and salt until well combined and crumbly.
02 - Add milk, 1 tablespoon at a time, beating after each addition, until a smooth, spreadable consistency is achieved. For piping, use less milk; for glazing, use more.
03 - If desired, stir in almond extract and a few drops of food coloring until evenly mixed.
04 - Use immediately to frost cooled sugar cookies. Allow cookies to sit at room temperature for at least 1 hour for the frosting to set.