01 - Combine vanilla ice cream, milk, peppermint extract, vanilla extract, and green food coloring in a blender container.
02 - Blend on high speed until completely smooth and creamy, approximately 30-60 seconds. Add additional milk 1 tablespoon at a time if thinner consistency is preferred.
03 - Taste the mixture and add more peppermint extract if desired, being cautious as extract is potent. Add additional food coloring drop by drop until vibrant green color is achieved.
04 - Pour evenly into two tall glasses. Top with whipped cream, maraschino cherry, and green sprinkles if desired. Serve immediately while cold.