Sour and bitter are opposite mistakes, not the same one. A practical checklist for reading your espresso, fixing under- and over-extraction, and knowing...
The numbers behind a good shot, explained simply: what dose, yield and time mean, the ratios worth starting with, and how to tell when to change them.
A practical dial-in method for home espresso: set your dose, adjust grind, weigh your yield, and taste your way to a balanced shot.
