1What you can say with confidence
- Golden Teacher mushrooms are Psilocybe cubensis and contain psilocybin and psilocin, like every other cultivar of the species. See lesson 2.
- Nobody has published where or when the culture first appeared. The usual story about its discovery pairs a name and a date that do not fit together. See lesson 1.
- No laboratory has published a measurement of Golden Teacher itself. A cross with Golden Teacher as one parent came out in the middle of a 14-strain comparison in 2026. See lesson 4.
- The mushrooms are illegal in the Netherlands, the United Kingdom, Germany and under US federal law. In the Netherlands the grow kit is legal to buy, the mushrooms it produces are not. See lesson 6.
2Why a lesson book
Search for Golden Teacher and you mostly find shop pages and spore sellers that repeat the same few sentences: discovered in the 1980s, golden caps, a mild strain for beginners, a "teacher" that brings insight. Some of that is true of the whole species, some is marketing, and some cannot be checked at all. This site sorts those statements, one subject per lesson, and links the sources so you can read them yourself.
The lessons are short and build on each other, but you can start anywhere. Every lesson opens with what you should know by the end and closes with the key terms and a few questions. The reader adds a composite trip report, clearly labelled as such.
3Who publishes this
The site is published by the team behind the Dutch smartshop Dutch-Smart, which sells Golden Teacher grow kits. Product links go to that shop. The colophon explains how the lessons are put together. The information is for adults; laws differ per country, and the law lesson comes before any product.