Rotating extraction observation mirror helps you engage with the coffee extraction process. Observe how variables influence extraction, experiment with techniques, and craft coffee that matches your taste. Designed for anyone pursuing the perfect cup, this mirror helps you study and document extraction techniques, improving brew skills and enjoyment. The magnetic design provides secure attachment to the coffee machine, preventing slipping or falling. The mirror offers a clear view and detailed observation to better understand the extraction process. Whether you own a café, have a home espresso setup, or enjoy coffee in your kitchen, this magnetic extraction observation mirror is a practical tool for precise coffee preparation and a better brew experience. Use scenarios - In a cafe: train staff on extraction control, dialing in grind size, dose, and time while visualizing the process. - At home: compare different techniques (grind, dose, temperature) and observe how changes affect flow and extraction. - In the kitchen: visualize each brew step to refine technique and achieve consistent results during daily coffee preparation.