🌈💥 Rainbow Sugar Crystal Volcano Reaction This colorful crystal volcano effect is made using simple kitchen ingredients. When a warm sugar solution saturates dry sugar and baking soda reacts with vinegar, the structure expands into bright foamy mounds that later dry into textured crystal formations. Here is the complete method. 🧪 Materials • Granulated sugar • Very hot water • Food coloring (assorted colors) • Baking soda • White vinegar • Small cups • Spoons • A shallow plate Step 1: Form th