I like to think about what situation could provoke a witch to make her own stomach a brewery/cauldron. I like to think that special magic potions with a heavy life aspect are best brewed inside of a living creature, witches make /great/ couldron's since they already have a strong connection to magic. Sometimes you just have to swallow your pride (and SO MUCH WATER AND INGREDIENTS) and become a walking couldron. I wonder how long   Victorthemaker's Azura has to waddle around with this potion sloshing and brewing in her stomach <3