Coffee Ratio for Espresso (2026): Start at 1:2

What is the coffee ratio for espresso?

Espresso ratio is the weight of dry coffee compared with the weight of espresso in the cup. Start at 1:2, so the formula is target yield = dose × desired ratio. For an 18 g dose, 18 × 2 = 36 g of espresso. AeroPress works to a very different ratio from espresso; our AeroPress ratio guide has the numbers.

La Marzocco Home’s Basic Espresso Theory uses the same 18 g in / 36 g out example, which is why this recipe is such a useful first stop. It is not a law. It is the clean starting line before taste takes over.

What do you need before you pull the shot?

You need a machine, an espresso-capable grinder, fresh coffee, a basket that matches your dose, a timer, and a scale that reads to 0.1 g. The scale matters because a few grams can meaningfully change the recipe and make the next adjustment harder to interpret.

• Espresso machine: any machine that can brew through a proper espresso basket.
• Espresso-capable burr grinder: fine, repeatable adjustment controls shot time. If yours jumps around too much, see our burr grinder picks for espresso.
• Portafilter and basket: use a basket dose it can actually hold without cramming coffee against the shower screen.
• Fresh coffee: use coffee that is appropriate for espresso and start with a recipe you can repeat.
• 0.1 g coffee scale: if you need one, start with our espresso and pour-over coffee scale picks.
• Timer: your machine timer, phone timer, or scale timer all work.

Clive Coffee’s basket-size guide explains why a “double shot” is not one fixed volume. Modern baskets vary, so dose and yield in grams make the recipe much less slippery.

How do you make a 1:2 espresso recipe step by step?

Keep the dose fixed, calculate the yield, pull the shot onto a scale, stop at the target weight, and taste before changing anything. Change only grind size on the next shot, because that keeps the recipe steady enough to learn from.

Step 1: Choose a basket-appropriate dose

Pick a dose your basket likes. For many home double baskets, 18 g is the simple place to begin, but do not force it if your basket is marked for a different range. Keep this dose fixed while you dial in.

Step 2: Multiply the dose by two

Use the formula: target yield = dose × desired ratio. For a 1:2 ratio, 18 g × 2 = 36 g. If you dose 17 g, your target is 34 g. If you dose 20 g, your target is 40 g.

Step 3: Grind, distribute, tamp, and pull onto a scale

Grind fine for espresso, spread the grounds evenly, tamp level, and put your cup on the scale. Start the timer when the pump starts. La Marzocco Home’s espresso guide describes a 1:2 recipe landing around 25–30 seconds.

Step 4: Stop at the target yield and record the time

Stop the shot when the scale reads your target yield, not when the cup looks “full enough.” Write down dose, yield, time, and taste. That small note keeps the next adjustment grounded in something more useful than memory.

Step 5: Taste, then adjust only the grind

If the shot is sour and fast, grind finer. If it is bitter and slow, grind coarser. Fine, repeatable adjustment is central here; it is the reason espresso grinders matter more than almost any shiny accessory.

What mistakes make espresso ratios confusing?

The biggest mistakes are mixing up water ratio with yield ratio, chasing volume in milliliters, changing dose and grind together, and treating 25–30 seconds like a magic spell. Use grams first, time second, and taste as the final vote.

• Using milliliters for the final shot — crema makes volume messy. Weigh the espresso instead.
• Changing dose every shot — keep dose fixed until the grind is close.
• Calling every double shot the same thing — basket size changes the dose, so the yield should follow the dose.
• Ignoring time completely — time is not the boss, but it tells you whether the shot rushed or choked.

How do you troubleshoot sour, bitter, or thin espresso?

Troubleshoot by matching the symptom to one small grind change. Sour and fast usually needs finer grinding. Bitter and slow usually needs coarser grinding. Thin but on-time may need a smaller yield change after the grind is already close.

Sour and fast

Keep the same dose and yield, then grind finer. The shot is likely running quickly relative to this recipe. After the sour/fast and bitter/slow fixes, use our espresso grinder settings guide if you want a deeper grind-by-symptom map.

Bitter and slow

Keep the same dose and yield, then grind coarser. A slow shot that tastes harsh or dry is a useful cue to open the grind slightly. Move the grinder a little, not a mile.

Balanced but too intense

Try a longer yield only after the grind tastes close. For example, move from 36 g to 40 g out from an 18 g dose. This changes the ratio while preserving a clear record of what changed.

Thin and hollow

Go back to 1:2 and grind slightly finer. Thin espresso can look normal in the cup while tasting underdeveloped. Do not add more yield to a shot that already tastes empty.

What espresso ratios should you know besides 1:2?

The three common espresso styles are ristretto, normale, and lungo. A 1:2 normale-style shot is the friendly middle. Shorter ratios are more concentrated; longer ratios produce more liquid and can pull out sharper or drier flavors if pushed too far.

La Marzocco Home’s brew-ratio guide and Coffee Bros.’ ratio overview both group espresso recipes this way:

Frequently asked questions