So you've mastered the home barista basics. Your barista skills are better than anyone you know, but still not at a professional level. You know how to steam milk, which grind size your machine ...
While I run a barista training academy, I do have people coming in to learn how to make a perfect cuppa at home. At the end ...
In this case, a preternaturally precise and consistent barista with a micro-level awareness of everything from the temperature of the milk to the exact fineness of the the grind. The perfect barista.