Better coffee at home: grind, water and ratio

Most disappointing home coffee comes down to three variables, and none needs a new machine.

1. Use a ratio, not a scoop#

A common starting point for filter-style brewing is about 1 part coffee to 15 or 16 parts water by weight. So 20 grams of coffee gets roughly 300 to 320 grams of water. A cheap kitchen scale makes your results repeatable, which is the whole point. Stronger? Use less water. Weaker? Use more.

2. Grind fresh and match the method#

Coffee goes stale quickly once ground. A burr grinder gives more even particles than a blade grinder, and even particles extract evenly. Match the grind to the method: fine for espresso, medium for filter and drip, coarse for French press and cold brew.

If your coffee tastes sour or thin, it is probably under-extracted, so grind finer. If it tastes bitter or harsh, grind coarser.

3. Mind the water#

Coffee is mostly water, so water quality matters. Very hard water leaves scale in machines, and very soft water can taste flat. If your tap water tastes of chlorine, a jug filter helps. The temperature should be just off the boil, around 92 to 96°C, for most methods.

Store beans well#

Keep beans in an airtight container, away from heat, light and moisture. Buy smaller bags more often, and look for a roast date on the bag. Freezing is an option for long storage, if you freeze in small portions and do not refreeze.

Clean your equipment#

Oils build up on grinders and machines and make coffee taste rancid. Rinse parts daily, wash weekly and descale as the maker advises.

Do you need to spend more?#

Possibly later. Spend first on a decent grinder, then on a scale, and only after that on the brewer. A modest brewer with a good grinder beats an expensive machine with pre-ground beans.

Change one thing at a time and write down the result. In a week or two you will know what you like better than any review could tell you.