01 - Combine vanilla ice cream, milk, peppermint extract, vanilla extract, and green food coloring in a blender. Blend until completely smooth and creamy, approximately 30-45 seconds.
02 - Taste the shake mixture and adjust peppermint extract or food coloring as desired to achieve preferred mint intensity and green color.
03 - In a chilled bowl, whip heavy cream with powdered sugar and vanilla extract using a hand mixer or whisk until soft peaks form, approximately 2-3 minutes.
04 - Divide the shake mixture evenly between chilled serving glasses.
05 - Top each glass generously with the prepared whipped cream, creating a fluffy mound.
06 - Sprinkle green sanding sugar or sprinkles over the whipped cream and top with a maraschino cherry if desired. Serve immediately with straws while cold.