Crystal Garden - cooking recipe

Ingredients

6 to 7 briquettes (brick or soft coal)
6 Tbsp. salt
6 Tbsp. laundry bluing
6 Tbsp. water
1 Tbsp. ammonia
food coloring (your choice)

Preparation

Place briquettes in a shallow bowl.
Mix all ingredients, except the food coloring.
Pour solution over briquettes. Sprinkle food coloring over contents in the bowl.
Once crystals begin growing, you can add more solution and food coloring to watch the garden continually change and grow.