Teach your kids how crystals grow with this edible rock recipe. Let each child have their own jar and their own color.
- 4 cups sugar
- 1 cup water
- Food coloring
- Clean glass jar
- String, cut into 6-inch lengths
- In a medium saucepan, heat 2 cups of the sugar and the water. Do not boil! Stir until the sugar is completely dissolved. Gradually add a few drops of the of your choice and the additional sugar, stirring continuously until all the sugar is dissolved.
- Pour the solution into a clean glass jar and tie the pieces of string to the pencil and suspend them across the mouth of the jar so that the ends hang into the sugar water.
- Crystals suitable to eat will form in an hour and continue for several days to a week. Pieces can be broken off and eaten after the first hour. (But, try to hold out for big crystals!)
- Although you may see quick results in small measure, the larger rock candy crystals you're accustomed to seeing in the candy store will take some time to form.
Recipe Source: by Nancy Birnes (Harper & Row). Reprinted with permission.