2 cups sugar
1 teaspoon baking soda
1/4 cup plus 1 teaspoon citric acid
1/2 cup light corn syrup
1/4 cup water
1 teaspoon flavoring extract, flavor of your choice
1-2 drops food coloring, color of your choice
Pinch of cornstarch, for dusting
Lightly dust the back side of a baking sheet with cornstarch.
In a medium saucepan, combine the sugar, corn syrup, and water. Cook the mixture until it reaches 300 degrees when measured with a candy thermometer. Remove from heat, and add the baking soda, ¼ cup of the citric acid, extract, and food coloring, and stir to combine.
Spread the mixture out onto the baking sheet (carefully so that it does not run over the edges), sprinkle with the teaspoon of citric acid, and allow to cool completely, about 30 minutes. Break the candy into pieces and add to a Ziploc bag. Using a rolling pin, crush the candy into tiny little pieces so that it resembles Pop Rocks. Store in Ziploc bags.
Image Credit: Emily Jacobs