01 - Line a baking sheet with parchment paper and lightly oil it.
02 - In a medium heavy-bottomed saucepan, combine sugar, corn syrup, water, and cream of tartar. Stir over medium heat until sugar dissolves.
03 - Bring mixture to a boil without stirring. Continue cooking until syrup reaches 290°F on a candy thermometer.
04 - Immediately remove from heat and stir in peppermint extract.
05 - Pour half of syrup onto the prepared sheet. Add red food coloring to remaining syrup in pot, swirl gently, then pour next to uncolored portion.
06 - Allow syrup to cool for 1 to 2 minutes until safe to handle with lightly oiled hands.
07 - Wearing food-safe gloves, pull and fold each color separately until candy is opaque and glossy, about 5 minutes.
08 - Twist the two colors together, pull into long ropes about 1/2 inch thick, then cut into 5-inch sticks.
09 - Place sticks on parchment and allow to cool completely before wrapping for storage.