Cauldron

A player's Cauldron is the part of their board where they collect symbols from their alchemical contraption as they propagate.

The Cauldron is a buffer of symbols for the next potion. During the Brew Step, a player can create a Potion by using all (at least one) of the symbols in their Cauldron.

Players cannot pick and choose symbols nor empty their Cauldron other than brewing a potion.