How to Dial In Your Coffee Grinder for Better Tasting Coffee

You bought great beans. Your brew method is solid. But your coffee still tastes a bit off. Flat. Sour. Maybe even bitter. If this sounds familiar, the fix is almost certainly your grind. Learning how to dial in your coffee grinder is the single fastest way to improve your coffee at home. And it's much simpler than you think.

What Does Dialling In Your Coffee Grinder Actually Mean?

Dialling in is just the process of adjusting your grind size until your coffee tastes balanced. Every time you open a new bag of beans, you need to do it. Different origins, roast levels, and even how many days post-roast the beans are will all change how they grind and extract.

That might sound tedious, but it's honestly just two or three test cups at most. Once you understand what you're tasting for, it becomes second nature.

Think of it this way: grind size controls how quickly water extracts flavour from your coffee. Too coarse, and water passes through too fast, pulling out only sour, underdeveloped flavours. Too fine, and the water sits too long, dragging out bitter, harsh compounds. The goal is the middle ground where sweetness, body, and clarity all show up together.

Start with the Right Grind Size for Your Brew Method

Before you start making adjustments, you need a sensible starting point. Each brew method needs a different grind size because the contact time between water and coffee is different. Here's a rough guide:

• Espresso: Very fine, similar to table salt or powdered sugar
• AeroPress: Fine to medium, depending on your recipe and brew time
• Pour over (V60, Chemex): Medium, like sea salt
• French press: Coarse, like raw sugar crystals
• Cold brew: Very coarse, like breadcrumbs

Set your grinder to one of these starting points based on your method. Brew a cup. Then taste it carefully. This is where the real work begins.

How to Dial In Your Coffee Grinder Step by Step

Here's the simple process. Brew a cup, taste it, and ask yourself one question: is this sour or bitter?

If it tastes sour, thin, or watery: your grind is too coarse. The water moved through too quickly and didn't pull enough flavour from the grounds. Go one or two clicks finer on your grinder and brew again.

If it tastes bitter, dry, or harsh: your grind is too fine. The water over-extracted the coffee and brought out unpleasant compounds. Go one or two clicks coarser.

If it tastes sweet, balanced, and clean: you're dialled in. Lock that setting and enjoy it for the rest of the bag.

The key is making small adjustments. Most grinders only need a tiny change between a bad cup and a great one. Resist the urge to make big jumps. One click at a time. Brew. Taste. Repeat.

For espresso drinkers, pay attention to your shot time as well. A well-dialled espresso typically runs for 25 to 30 seconds. If it's gushing out in 15 seconds, go finer. If it's barely dripping at 40 seconds, go coarser.

Common Mistakes When Dialling In

The biggest mistake is changing too many things at once. If you adjust grind size, coffee dose, and water temperature all in the same brew, you'll have no idea which change made the difference. Pick one variable and stick with it. Grind size first, always.

Another trap is not using a scale. If you're eyeballing your dose, your results will be inconsistent no matter how perfect your grind is. Weigh your beans every time. A simple kitchen scale is all you need. Keep your dose steady so that grind size is the only thing moving.

People also forget that beans change over time. A bag that's three days post-roast will grind differently than the same bag at two weeks. You might need to make tiny adjustments as the beans degas and age. It's not a set-and-forget situation.

Finally, don't skip the tasting step. It sounds obvious, but many people adjust their grinder based on how the grounds look rather than how the coffee tastes. Your tongue is the best calibration tool you have. Trust it.

Why Fresh Beans Make Dialling In So Much Easier

Here's something most guides skip over: the quality and freshness of your beans matter just as much as your grinder settings. Fresh specialty coffee responds predictably to grind changes. Go finer, the cup gets richer. Go coarser, it gets lighter. The flavours move in the direction you expect.

With stale or commodity-grade beans, you're often chasing a flavour that just isn't there. The sugars have degraded. The aromatics have faded. No amount of grind adjustment will bring back what's already gone. You end up frustrated, tweaking endlessly for a cup that never quite hits.

That's why starting with fresh, well-roasted coffee makes the whole process faster and more rewarding. At The Folk Roaster, every bag arrives to you only days after roasting. Whether you're working with our Saturday Light Roast for a bright, clean pour over or dialling in the Stamp Blend for a punchy espresso, you're starting with beans at their absolute peak.

If you prefer something with more depth for milk-based drinks, the Origin Dois blend is a brilliant starting point. It's forgiving across a range of grind settings and rewards you with chocolate and nut sweetness once you find the sweet spot.

So grab a fresh bag, set your grinder to a reasonable starting point, and start tasting. You're two or three adjustments away from the best cup you've made at home. That's all dialling in really is.