How to Choose the Right Coffee Grind Size for Your Coffee Maker

Grind size is one of the easiest ways to improve the coffee you make at home. You can have excellent Australian-grown coffee, fresh water and a good machine, but if the coffee is ground too fine or too coarse for your equipment, the result can still be bitter, weak or muddy.

The good news is that the basic rule is simple: the shorter the time water spends with the coffee, the finer the grind generally needs to be. The longer the contact time, the coarser the grind. Here is a practical guide for Australian coffee drinkers.

Why Grind Size Matters

Grinding increases the surface area of the coffee exposed to water. A finer grind gives water more surface to work on, while a coarser grind slows extraction. The aim is to extract the pleasant sweetness, body and flavour from the coffee without pulling out too much bitterness or leaving the cup thin and sour.

Grind size works together with dose, water temperature and contact time. It is not a magic setting that fixes everything, but it is usually the first adjustment worth making when a cup does not taste right.

Espresso Machine: Fine Grind

Espresso machines force hot water through a compact coffee puck under pressure, so they need a fine, even grind. The texture should be finer than table salt but not as powdery as flour.

If the shot runs very quickly and tastes thin or sharp, the grind may be too coarse. If the machine struggles and the shot tastes harsh, it may be too fine. Small adjustments make a big difference.

For a straightforward starting point, try Jaques 1Kg Espresso Roast – Espresso Grind. It is already ground for espresso machines, while the whole-bean option lets you adjust the grind at home.

Plunger: Coarse Grind

A plunger needs a coarse grind, roughly like coarse sea salt or raw sugar. The coffee remains in contact with the water for several minutes, so a fine grind can over-extract and leave a bitter, gritty cup.

If the plunger is difficult to press, or there is a lot of sediment in the cup, your coffee may be too fine. If the coffee tastes weak, try a slightly finer setting or increase the dose rather than extending the steep time too far.

Filter and Pour-Over: Medium to Medium-Fine

Filter coffee sits between espresso and plunger. Start with a medium grind, similar to sand or table salt, and adjust from there. A pour-over often needs a little finer grind than an automatic drip machine because the water passes through the coffee at a different rate.

If the water races through and the coffee tastes thin, go finer. If the filter drains very slowly and the coffee tastes dry or bitter, go coarser. Our Jaques 1Kg Medium Roast Whole Beans is a versatile choice for filter coffee and gives you the freedom to find the setting that suits your equipment.

Moka Pot: Medium-Fine

A stovetop moka pot usually works best with a medium-fine grind, a little coarser than espresso. Do not tamp the coffee into the basket. Fill it evenly, keep the heat moderate and remove the pot when the coffee begins to finish flowing.

Cold Coffee: Coarse

Cold coffee methods that use a long steep generally need a coarse grind. A finer grind can make the result bitter and difficult to filter. If you are making cold coffee at home, start coarse and allow plenty of time for the water to draw out the flavour gradually.

A Simple Troubleshooting Guide

• Sour or sharp: try a slightly finer grind, a longer contact time or hotter water.
• Bitter or dry: try a slightly coarser grind, a shorter contact time or cooler water.
• Weak or watery: increase the dose or grind a little finer.
• Muddy or silty: use a coarser grind and check that your filter or plunger screen is clean.

Freshly Ground Australian Coffee Makes the Difference

Grinding just before you make your coffee helps preserve the aroma and flavour of fresh coffee. A burr grinder gives more even particles than a blade grinder, which makes it easier to repeat a good result. If you prefer convenience, quality pre-ground coffee matched to your equipment is still a sensible option.

Jaques Coffee is grown and roasted in Far North Queensland, so Australian coffee lovers can buy directly from an Australian family business rather than relying on coffee that has travelled through a long international supply chain. Explore our Australian-grown coffee range and choose the grind that suits the way you make coffee at home.