To begin with, Eino took his not-so-clean cauldron (it seemed like it gathered some dust over the break) and used the Scouring Charm first... several times. When the cauldron was in a spot-less condition he filled it with water using the Water-Producing Charm. He let the water rest as he fetched the ingredients Professor Lafay listed and returned the to the table. He lined them up neatly at a safe distance from the cauldron and scribbled down some notes before initiating the brewing process.