I have an old book by Magnus Pyke called "Butter Side Up" which has a chapter on this. The bit about Streptomyces wasn't known then though. https://en.wikipedia

I have an old book by Magnus Pyke called "Butter Side Up" which has a chapter on this. The bit about Streptomyces wasn't known then though. https://en.wikipedia.org/wiki/Magnus_Pyke https://en.wikipedia.org/wiki/Magnus_Pyke https://www.amazon.co.uk/Butter-Side-Up-Delights-Science/dp/0719532981 https://www.amazon.co.uk/Butter-Side-Up-Delights-Science/dp/...