Overview

• The optimized pour-over method uses a high pour height to create a laminar water jet, triggering an avalanche effect in coffee grounds for better mixing and extraction.
• This technique allows brewers to make a stronger cup of coffee while reducing bean usage by 5-10%, maintaining flavor and strength.
• The research aims to reduce coffee’s resource footprint as climate change and rising prices threaten global coffee cultivation.
• Experiments involved laser-illuminated silica gel particles to simulate coffee grounds, enabling precise visualization of mixing dynamics.
• Maintaining an unbroken water flow is critical; improper pouring disrupts the process, compromising coffee quality and extraction efficiency.