30 charcoal briquettes 1 box salt

2 laundry bluing bottles ammonia

1 bottle food coloring 30 stro-bowls

15 plastic spoons 15 measuring cups

15 measuring teaspoons 15 plastic cups

1. Place one charcoal briquette in a stro-bowl, rough side up.
2. In a plastic cup, mix together the following: ¼ cup salt, 3 tablespoons of ammonia, ¼ cup bluing, and ¼ cup water.
3. Pour the mixture over the briquette until saturated.
4. Squeeze drops of food coloring onto the briquette.
5. Place the bowls where they will not be disturbed.
6. To encourage growth after a few days, add more of the mixture solution by slipping it below the crystal growth.