Serena picked up her quill and after dipping it carefully in her ink she wrote down what the Professor had wrote on the board.
Serena picked up her wand and pointed at her cauldron.
"Scourgify". she said clearly to make sure that not an speck of dirt was missed.
"Perfect!" the young witch thought to herself. Now it was time for the goat's milk to be added.
She placed her wand back down on her desk and carefully measured and poured her gallon of goat's milk into the cauldron. After Serena was done with that step, she awaited the teacher's next instructions.