Six methods, honest instructions, and the science behind why each one tastes different.
The purist's choice
Fast, forgiving, flexible
Smooth, sweet, zero bitterness
Bold, rich, full immersion
Precision under pressure
Clean, elegant, theatrical
Use filtered water with a TDS of 75–150 ppm. Too soft and the coffee tastes flat. Too hard and it tastes harsh. Evian or a simple Brita filter gets you most of the way there.
A tablespoon of coffee can range from 5g to 12g depending on grind size. Scales cost £10 and will improve every single cup you ever make. It is the single highest-ROI purchase in coffee.
Coffee stales within 15–30 minutes of grinding. A burr grinder (not blade) is essential. The Timemore C2 at £45 produces results that rival grinders ten times its price.
Light roasts need 92–96°C. Dark roasts prefer 85–90°C. Boiling water on light roast creates harsh over-extraction. Let the kettle sit for 30–45 seconds after boiling if you have no thermometer.