The grind / Small adjustments

What to change when the cup tastes off

A grinder setting is a place to begin. The right setting depends on the beans, the brewer, the amount of coffee and the cup you want to drink.

Why size makes a difference

Grinding breaks coffee into smaller pieces and exposes more of it to water. In a filter brewer, it also changes how easily water passes through the coffee bed. Finer grounds generally offer more resistance; coarser grounds generally let water move through more freely.

This is why a new bag can need a different setting even when the recipe stays the same. Roast level, the age of the coffee and the way a grinder produces fine particles all affect the brew.

Make a small comparison

Choose a recipe you can repeat. Keep the coffee dose, the water amount and your pouring pattern the same, then change the grind by a small step. Taste the coffee after it has cooled a little and compare it with the previous cup.

• Thin and sharp: explore a slightly finer setting and make sure all the coffee is being evenly wetted.
• Harsh or drying: explore a slightly coarser setting and a gentler pour.
• Slow and muddy: check whether the filter is clogged, whether the grind is very fine, or whether excessive stirring is moving fine particles into the paper.

Strength is a different question

A cup can be well brewed and still feel too concentrated. Try adding a little hot water to the finished coffee. If the flavour becomes clearer and more enjoyable, the issue may be strength rather than grind size.

For the next brew, you can use a little less coffee or a little more water. Keep notes so you know which adjustment helped.

Leave room for preference

Some people enjoy a light, bright cup; others prefer a fuller, more rounded one. Use the recipe to make results repeatable, then let your own taste decide when to stop adjusting.