Chocolatey Peanut Brittle

¼ cup cocoa powder

1 teaspoon baking soda

1 tablespoon butter

1 cup sugar

½ cup light corn syrup

¼ cup heavy cream

1 ¼ cups salted peanuts

Lightly butter a cookie sheet; set aside. Combine cocoa and baking soda in a small bowl; add butter. Set aside. Combine sugar, corn syrup, and heavy cream in a heavy 2-quart saucepan. Place over medium heat and stir constantly until sugar is dissolved. Stir in peanuts. Continue cooking and stirring frequently until mixture reaches 300º on candy thermometer (hard-crack stage). Remove from heat; stir in cocoa mixture. Immediately pour onto cookie sheet; quickly spread and pull into ¼-inch thickness. Place on wire rack to cool completely. Snap into pieces; store in airtight container. Makes about 1 pound of candy.