In the event of society falling, knowing how to create penicillin could be useful, argues YouTube channel [The Thought Emporium].
While many types of mould naturally produce anti-bacterial compounds, the YouTuber starts with a strain made specifically to produce a large amount of antibiotics.
At the end of the process, 125mg of the drug is produced, but this is negligible for wider use; scaling up the process would be crucial should a post-apocalyptic world require penicillin.
It is noted that creating penicillin would likely be considered illegal, and an AI could be used to assist with production.
