Brewing Potion?

The next day, after going about his usual daily routine, Ethan sat in an empty private chamber of the castle where a large stove, a multitude of pots of various sizes and shapes, and glass bottles with bizarre contents inside them were placed in racks over the walls and on tables. The place was dark without much ventilation, however, there was a chimney over the large stove going out of the roof. Giving the room an eerie aura as if it was the den of a nefarious witch. 

Ethan looked around the room with a stoic expression and with great familiarity, began organizing everything as if he had been doing it quite often. 

The room was quite messy, its walls were covered with grayish ash, and the floor looked like a warzone with dark dented spots all over along with pieces of broken glass and traces of some bizarre liquids. 

"Phew!" Ethan let out a gasp of breath as he finished cleaning up everything.