
Line a 15x10x1-inch pan with foil, then butter the foil and set the pan aside.
In a large, heavy saucepan, combine the water, sugar, corn syrup and food coloring. Bring to a boil over medium heat, stirring occasionally. Cover and cook for an additional three minutes, or until any sugar crystals have dissolved.
Uncover the pan, and cook on medium-high heat, without stirring, until a candy thermometer reads 300°F (the hard-crack stage), about 25 minutes.
Remove the saucepan from the heat, and stir in the cinnamon oil. Caution: Keep your face away from the cinnamon oil as you're adding it to the pan.
Immediately pour the hot liquid into the prepared pan. Let it cool completely, about 45 minutes.
Break the candy into pieces using the edge of a metal mallet. Sprinkle both sides of the candy with confectioners' sugar.