Try your hand at some homemade Halloween magic with this Black Magic Halloween Volcano Cauldron. First, add 1 teaspoon of ARM & HAMMER™ Baking Soda to your black cauldron. Mix together 1/4 cup of vinegar, a few drops of dishwashing liquid and food coloring (optional, but recommended). Add all of this to the cauldron and watch the magic of ARM & HAMMER™ Baking Soda as your cauldron bubbles to life! Be sure to supervise young children during these activities.