Grind Size – the Underrated Lever

If your coffee at home never tastes like it does in the café, it’s rarely the bean – usually it’s the grind. It’s the most important and cheapest lever for a better cup.

Fine, medium, coarse

Rule of thumb: the shorter the contact with water, the finer the grind. Espresso, which runs through in seconds, needs flour-fine powder; filter, which takes minutes, a medium grind; cold brew and French press, which steep for hours, a coarse grind like sea salt.

Over- and under-extraction

Ground too fine, the water dissolves too much – the coffee turns bitter, which is called over-extracted. Too coarse, and it stays sour and thin, that is under-extracted. The grind controls exactly this balance.

Grinding fresh pays off

Ground coffee loses aroma within minutes. A good grinder – ideally with burrs – often does more at home than a pricier machine. It delivers an even grind, and that is half the battle.