A witch’s cauldron is an essential tool for a witch preparing potions, herbal remedies, scrying, divining and conjuring. Using it is also an important connector to the four natural elements (earth = cauldron, water = fluid, fire = fire, air = steam and aromas). For doing magic, this connection is essential. Although cauldrons can be made out of many properties, most books recommend that a witch should use an iron one with three legs. I have not found any explanation for the three legs. I imagine that it is symbolic in some way, but I’m not entirely sure. Maybe it is to keep it from tipping over. Nothing worse than spilled magic.