Grind size is one of the most powerful variables in coffee because it changes two things at once: how much surface area water can reach and how easily water moves through the coffee bed.
That is why the same beans can taste thin in one brewer and harsh in another when the grind is wrong.
The good news is that you do not need a chart with exact particle sizes. You need a sensible starting point and a way to move one step finer or coarser based on what the cup tells you.
Use brew speed as a clue
Grind size is not only about flavour. It changes how quickly water moves.
- Brew too fast: try grinding finer.
- Brew too slow: try grinding coarser.
- French press hard to plunge: go coarser.
- Pour-over drains before you expect: go finer.
- Drip basket nearly overflows: go coarser or reduce the dose.
Use flavour as the final judge
When coffee tastes thin, hollow or sharply sour, it may be under-extracted. A slightly finer grind can help. When it tastes harsh, drying or excessively bitter, a slightly coarser grind can help.
But roast matters too. A dark roast can taste bitter even when the extraction is technically fine if you simply do not enjoy that roast profile. Grind cannot turn a dark roast into a light roast.
Burr grinder vs. blade grinder
A burr grinder is easier to control because it produces a more consistent range of particle sizes. A blade grinder chops coffee unevenly, which can create a mix of very fine particles and large pieces in the same batch.
You can still brew drinkable coffee with a blade grinder. Pulse it in short bursts and shake the grinder gently between pulses to reduce extreme unevenness. If you brew often, a basic burr grinder is one of the upgrades most likely to make home coffee easier to repeat.
Do mushroom coffee grounds need a special grind?
No. Urban Calm whole bean and ground mushroom coffee are still roasted coffee. Choose the grind for the brewer. The mushroom extracts do not require a special grind size or separate extraction step.
The easiest way to dial in grind
- Use the same coffee dose and water amount.
- Choose the starting grind for your brewer.
- Brew and taste.
- Change the grinder by one small step.
- Brew again.
Do not change the ratio, grind, water temperature and brew time all at once. You want to know which adjustment helped.
Keep brewing
Explore Urban Calm Specialty Coffee, roasted in Calgary from Colombian Arabica.
