How to Dial In Espresso: A Step-by-Step Method
Updated November 13, 2026
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To dial in espresso, keep the dose fixed, aim for twice that weight of liquid in 25 to 30 seconds, and adjust only the grind until you get there. Then taste, and make one small change at a time. Most bags take three to five shots to dial in.
What you need
- A scale that reads 0.1 g, ideally one that fits under your cup.
- A timer. Your phone is fine.
- Fresh beans and a burr grinder with fine enough steps for espresso. See the grinder guide.
- A non-pressurized basket, if your machine has one. Pressurized baskets hide grind changes. Here is the difference.
The method
- Fix your dose. Use the amount your basket is made for, often 18 g for a double. Weigh it every time.
- Set a target. A 1:2 ratio is the standard starting point: 18 g of coffee in, 36 g of espresso out.
- Pull a shot and time it from the moment you start the pump until you reach the target weight.
- Read the time. Under about 22 seconds, grind finer. Over about 32 seconds, grind coarser.
- Change only the grind, one small step at a time, and pull again.
- Taste once you are in the 25 to 30 second window. Time gets you close; taste decides.
Fix it by taste
| What you taste | What it means | What to change |
|---|---|---|
| Sour, sharp, thin | Under-extracted | Grind finer, or let the shot run a little longer |
| Bitter, harsh, dry | Over-extracted | Grind coarser, or stop the shot a little earlier |
| Sour and bitter at once | Uneven extraction (channeling) | Improve distribution and tamp level; do not change the grind yet |
| Weak and watery | Too much water for the dose | Stop the shot earlier, closer to 1:2 |
| Heavy and intense, but balanced | A short ratio | Nothing, unless you want it lighter: then run it longer |
Rules that save coffee
- One change per shot. If you change grind and dose together, you cannot tell which one worked.
- Purge a little coffee after each grind change, so the old setting is not mixed into the next dose.
- Keep your puck prep the same. Same distribution, same tamp, every time.
- Expect to adjust again. Beans change as they age, so a setting that worked last week may need one step finer today.
Starting points by roast
| Roast | Ratio to try | Why |
|---|---|---|
| Dark | 1:1.5 to 1:2 | Extracts easily; shorter shots avoid bitterness |
| Medium | 1:2 | The standard starting point |
| Light | 1:2.5 to 1:3 | Harder to extract; more water brings out sweetness |
Related guides
- Why is my espresso sour?
- Espresso grind size explained
- Pressurized vs non-pressurized baskets
- Do you need a grinder for espresso?
Frequently asked questions
How long should an espresso shot take?
About 25 to 30 seconds for a standard double is the usual target, measured from when the pump starts. Treat it as a starting range, then adjust by taste.
What is a 1:2 espresso ratio?
It means the espresso in the cup weighs twice as much as the dry coffee in the basket: for example, 18 g of ground coffee producing 36 g of espresso.
Should I change the grind or the dose first?
Change the grind first and keep the dose fixed. Grind has the largest effect on shot time, and changing one variable at a time shows you what actually helped.
How many shots does it take to dial in?
Usually three to five with a new bag of beans, and one or two when you only need a small correction.