How to Make It
Preheat oven to 250 °. Line a baking sheet with parchment paper; spray lightly with baking spray.
Combine the aquafaba and cream of tartar in the bowl of a stand mixer; beat on high until white and glossy, and soft peaks form, 2 to 5 minutes.
With the mixer running, slowly add sugar to aquafaba mixture, 1 tablespoon at a time. Continue mixing until peaks are more defined and stiff, 10-15 minutes. Add peppermint extract to bowl; mix until incorporated.
Transfer meringue mixture to a pastry bag, fitted with a ¼-inch round tip; squeeze 2-inch round mounds onto prepared pan, about 1 inch apart. Bake at 250 ° for 2 hours or until dry and firm to the touch.