'I guess this will do,' Damien thought while staring at the mouldy cheese block. He glanced at Dan and asked, "Do I need to let it ferment a bit longer?"
"No, this production of penicillium chrysogenum is perfect," Dan shook his head and replied. "Now all you need to do is a sterile fermentation of the mould."
And that was where the problem arose. Damien had asked one of the blacksmiths to make the fermentation chamber but —
He turned to look at the metal box that the blacksmiths had sent him back. There were many problems with these fermentation chambers and as the production of penicillin required strict requirements, this won't do.
"What's the matter, Lord Damien?" Thalia asked when she saw Damien frowning.
"It's nothing," Damien rubbed the back of his head and sighed. He pointed to the fermentation chambers and explained, "There are multiple openings in the chamber. What I needed was a perfectly sealed container."