Homemade Marshmallows - A Kitchen Treat To Make Together

About 1 cup potato starch (found in the kosher foods section of supermarkets) or cornstarch

light corn syrup (can substitute honey)

-ounce packets unflavored gelatin

large egg whites, at room temperature

cream of tartar

cold water, divided

plus 1 tablespoon sugar, divided

pure vanilla extract

few drops peppermint oil, optional

drops red food coloring, optional