Add the granulated sugar and whisk till sugar dissolves completely.
Add peppermint extract, vanilla extract, salt, green food color (optional) and mix till combined. Cover the mixture and refrigerate for 4 hours or overnight.
Once the mixture is chilled, make the ice cream according to ice cream maker manufacturer instructions.
Add semi-sweet chocolate chips to the ice cream mixture after the ice cream has been churning in the bowl for 10-15 minutes.
Once the ice cream is done, transfer to a bowl and freeze for 4-6 hours before serving or till the ice cream is firm.