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How to Brew Better Coffee at Home: A Beginner's Guide

If you are new to making coffee at home, it helps to start with a straightforward method and a few simple variables. This guide focuses on the French press, an easy method for beginners, but the same principles apply to other manual brewers. French press coffee is known for bold flavour and a full body, and medium to dark roasts tend to work well.

The first variable is grind size. The longer the coffee is in contact with water, the coarser the grind should be. A French press uses a coarse grind, roughly the texture of rock salt, which suits its long brewing time. Drip and pour-over coffee works best with a medium grind, similar to kosher salt, while espresso needs a fine grind like table salt. If your cup tastes bitter or sour, the grind may be too fine and the coffee over-extracted, so try a coarser grind. If it tastes flat or watery, the grind may be too coarse and under-extracted, so try a finer grind.

Water temperature matters too. For a French press, aim for around 93°C, give or take 3 degrees, with about 4 minutes of contact between the coffee and the water. This sits inside the general brewing range of 90 to 96°C. Colder water can leave coffee flat and under-extracted, while water that is too hot also harms the taste. Because water loses heat as it pours over the grounds and again in the serving vessel, it is sensible to aim for the higher end of the range. Darker roasts extract more easily and may need slightly lower temperatures, while milk in the cup lowers the temperature, so brewing slightly hotter helps.

The coffee-to-water ratio is the next step. A common starting point for a French press is one gram of coffee to ten to sixteen grams of water. Using a scale removes guesswork, but if you do not have one, use generous scoops and keep the ratio consistent.

Freshness is also important. Buy whole beans and grind them immediately before brewing, which the NCA recommends for maximum freshness. Burr grinders produce a more consistent grind than blade grinders. Use cold water, ideally filtered, and avoid distilled or softened water.

After brewing, serve the coffee immediately, or transfer it to another container. Leaving coffee in the press continues to brew and turns bitter. Clean the French press after each use, including disassembling and washing the filter, since leftover grounds and coffee oil can spoil the next cup.

If your brew is not quite right, adjust one variable at a time. You can also compare your home brew with a cup from an independent cafe in Exeter such as Creeks Cuppa. Their homepage is available at Creeks Cuppa.