1Blend yogurt, milk, sugar, and peppermint extract in a food processor and puree until smooth, about 30 seconds.
2Transfer yogurt mixture to ice cream maker and freeze according manufacturer's directions.
3Transfer the frozen yogurt mixture to a 1-quart container and fold in chocolate chips. Freeze mixture for 2 hours; stir to evenly distribute chocolate chips and freeze until hardened, about 2 hours.
Footnotes
Cook's Note:
I use dark chocolate chips because I prefer the flavor and they have health benefits too. You can use regular chocolate chips if you prefer.