Magical Crystal Garden - cooking recipe

Ingredients

5 or 6 pieces of charcoal
6 Tbsp. salt
6 Tbsp. water
6 Tbsp. laundry bluing
1 Tbsp. ammonia
food colorings

Preparation

Mix salt, water, bluing and ammonia in a bowl.
Put charcoal in a clear glass container.
Pour the mixture over the charcoal. Sprinkle drops of food colorings on charcoal to give color.
Set container in warm place.
Carefully water a little when liquid is absorbed.