Line a 15x10x1 inch pan with foil and butter the foil and set aside.
In a large heavy saucepan combine the corn syrup, water, sugar and food coloring.
Bring to a boil over medium heat, while stirring occasionally. Cover and cook for three minutes so all the sugar crystals will dissolve.
Uncover and cook on medium-high heat, without stirring, until a candy thermometer reaches 300° (hard-crack stage) about 25 minutes. Remove from the heat and carefully stir in the cinnamon oil.
Immediately pour into the prepared pan
Cool about 45 minutes
Break into pieces using a knife and a meat mallet. Bang the meat mallet against the knife, while pointing the knife into the candy. Dust the confectioners' sugar over the candy and gently toss to cover all sides.
Store in an airtight container.
