Basic Coffee Extraction for Espresso Course for in-depth coffee extraction with Flair58, suitable for home use, starting from scratch, focusing on practice. 1. Preparing coffee before extraction (Espresso). 2. Finding the initial grind size to adjust flavor. 3. Recommending special techniques from real experience to address work issues. 4. Recommendations for selecting equipment for coffee extraction (to simplify selection/save money/time). ***Emphasizing real practice.***