01 - Combine vanilla ice cream, milk, peppermint extract, vanilla extract, and green food coloring in a blender.
02 - Blend until smooth and evenly colored. Taste and adjust peppermint extract or coloring as desired.
03 - Pour the shake into two tall glasses.
04 - Top each shake with a generous swirl of whipped cream.
05 - Garnish with a maraschino cherry and sprinkles if using. Serve immediately with a straw.