01 - Add vanilla ice cream, milk, peppermint extract, and green food coloring (if using) to blender canister.
02 - Process mixture on high speed until completely smooth and creamy, approximately 30-45 seconds.
03 - Add chopped chocolate chips and pulse blender 2-3 times to distribute evenly while maintaining chunky texture.
04 - Divide milkshake evenly between two tall glasses, filling to approximately 1 inch below rim.
05 - Mound whipped cream generously on top of each milkshake, creating a slight peak.
06 - Sprinkle chocolate chips or shavings over whipped cream and garnish with fresh mint leaves. Serve immediately.