🤔Sourness in espresso can be caused by under extraction or uneven extraction.
✅To fix under extraction, grind finer and allow more contact time.
🔍To fix uneven extraction, coarsen the grind to allow more even flow of water.
🌟Experiment with grind size and extraction time to find the perfect balance.
💡Proper preparation, including distributing grounds evenly and tamping properly, can also improve extraction.