Knob LLC

Coffee Tech

Brewing systems, workflow experiments, and coffee technology notes.

Fundamentals of Making Espresso

The water temperature and contact time with the ground coffee (assuming the grind size accommodates the desired flow rate) determine the taste of the coffee.

Jan 1, 2026

systemsdecision-makingengineering

My Preferred Coffee Beans

Wet-processed, grown above 2,000 meters, and sourced from Costa Rica, Kenya, Ethiopia, or Colombia.

Jan 8, 2024

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Coming Soon

The ability to buy the beans that we roast.