Cinnamon Peanut Brittle

Directions

1. 1
   Combine the water, sugar, cream of tartar and corn syrup in a medium-size heavy saucepan fitted with a candy thermometer.
2. 2
   Bring to a boil over medium heat.
3. 3
   After it boils, stir the mixture occasionally.
4. 4
   Boil the mixture until it reaches 340.
5. 5
   The color should be deep golden brown.
6. 6
   Remove from the heat and, working quickly, stir in the cinnamon with a wooden spoon.
7. 7
   Stir in the butter until melted, then the peanuts and baking soda.
8. 8
   Pour the mixture onto an oiled cookie sheet with sides and spread it out a bit with the back of a wooden spoon, to about 1/4-inch thickness (it may not fill the whole pan).
9. 9
   Let harden, uncovered, in a cool place, 30 to 45 minutes.
10. 10
    Once cool, break the brittle into pieces.
11. 11
    Store in an airtight container.