Coffee glossary
Under extraction
Pulling too little out of the coffee, which leaves it sour, thin and salty. The cure is a finer grind, a longer contact or hotter water.
Pulling too little out of the coffee, which leaves it sour, thin and salty. The cure is a finer grind, a longer contact or hotter water.
Sour and bitter at the same time is not under extraction: that is channelling, and grinding either way makes one of the two worse.