Dose is the weight of ground coffee that goes into the basket, and it is the one number you can measure perfectly every time. Everything else in espresso gets easier once the dose is fixed.
Dose in grams, not scoops. Weight is the only honest measure.The Direct Answer: How Many Grams
A single espresso uses roughly 7-9 g of ground coffee, and a modern double uses about 14-21 g, with 18 g a very common starting point on a standard double basket. The real rule is simpler than any number: dose to match your basket. A basket rated for 18-20 g wants about that much, not 12 g and not 24 g. Weigh every dose, because volume changes with bean density, roast, and grind.
The Concept Explained
Dose is the foundation of the shot. It sets how much coffee the water has to work against, how much room the puck has in the basket, and, combined with yield, your ratio. Change the dose and everything downstream shifts: flow time, extraction, and flavor. That is why experienced baristas treat dose as a fixed variable and move grind or yield around it.
Dose Ranges by Basket
| Basket type | Typical dose | Typical yield at 1:2 |
|---|---|---|
| Single | 7-9 g | 14-18 g |
| Double | 14-18 g | 28-36 g |
| Large / triple | 18-21 g | 36-42 g |
These are starting points. Read the number printed on the basket and use the middle of its range as your first attempt.
How to Dose Consistently
Consistency is the entire value of dosing, and it relies on two habits:
- Weigh the coffee into the basket with a scale, to a tenth of a gram.
- Use a dosing funnel so grounds do not scatter across the counter and change the effective dose.
Keep the grind fixed while you learn the dose, then keep the dose fixed while you dial the grind. Changing both at once hides which variable moved the flavor. A machine with an integrated scale does this measurement for you, which removes the most common beginner failure: guessing the dose.
Dose, Grind, and Yield Together
Dose alone does not decide the taste; it sets the stage for grind and yield. A fixed dose lets you see the effect of a grind change clearly, because only one thing moved. When you know the dose, the ratio (dose vs yield) becomes your shot recipe, and every other adjustment is a flavor correction on top of a repeatable base.
Weighing dose and yield turns espresso from luck into a repeatable recipe.Effects on Taste
Too little coffee in the basket lets water flow fast, producing a thin, sour, under-extracted shot with a hollow body. Too much coffee chokes the puck, giving a bitter, muddy, over-extracted shot that also struggles to flow. The right dose for the basket produces room for a balanced puck: firm enough to resist, open enough to flow evenly, landing near 25-30 seconds and tasting sweet.
Common Edge Cases and What to Try Next
If your basket is rated 18 g but 18 g touches the shower screen and marks the puck, use slightly less. If the grounds float above the rim before you tamp, your dose is too high for that basket. If you are changing baskets after an upgrade, re-set the dose to the new rating instead of keeping your old number. And if you mostly drink milk drinks, a standard double dose still works; adjust yield and ratio to suit the milk, not the dose.
Authoritative Sources
Independent references for the dose and extraction guidance in this guide.
FAQ
How many grams of coffee per espresso shot?
A single shot uses roughly 7-9 g of ground coffee, while a modern double shot uses about 14-21 g depending on the basket. The dose should match the basket rating; weight the coffee every time for consistency.
What happens if you put too much coffee in an espresso basket?
An over-filled basket chokes the shot: water struggles through, flow slows, and the result is bitter, over-extracted and sometimes uneven. Too little coffee does the opposite, producing a fast, thin, sour shot. Match the dose to the basket.
How do I dose my espresso consistently?
Weigh every dose with a scale into the basket, use a dosing funnel to avoid spills and mess, and keep the grind setting fixed while you evaluate. The same weight and the same preparation from shot to shot is what makes a repeatable routine.
What is the 30 second rule for espresso?
The 30 second rule is a common benchmark: a well-pulled double espresso extracts in roughly 25-30 seconds from first drop. It is a starting point for dialing in, not a law.
Ready to dose by weight every shot? An integrated scale removes the guesswork. See the Meraki espresso machine, or call +1 833 854 9555 (Mon-Fri, 9 AM-5 PM EST).
Dose ranges and ratios are general barista practice, not Meraki-specific claims. Basket ratings and machine behavior follow the official manual.
