How to Make a Doppio at Home

A doppio is a double shot of espresso: 18 g of coffee in, 36–40 g of liquid out, extracted in 25–30 seconds at 9 bar. It is the reference format for all espresso drinks — lattes, cappuccinos, and flat whites all start here. To pull one, dose 18 g into a double basket, tamp, and stop when your scale reads 36–40 g.

What is a doppio?

Doppio is Italian for “double.” In espresso, it means a double shot: approximately 18 g of coffee dosed into the double basket, yielding 36–40 g of liquid espresso at a 1:2 ratio. Extraction runs for 25–30 seconds at 9 bar of pressure.

The doppio is not a specialty or novelty shot format — it is the default. When a cafe barista pulls an espresso, they are pulling a doppio. A single espresso (18 g in, 18–22 g out) is the exception, not the rule. The double basket that ships standard with nearly every home espresso machine is calibrated for this recipe. If you have been making “espresso” at home and wondering whether you are doing it right, the answer is that 18 g in, 36–40 g out, 25–30 seconds defines the target you should be aiming at.

The doppio produces a balanced shot with pronounced sweetness, rich crema, and enough body to carry through steamed milk. Its 1:2 extraction ratio is the reference point from which other shot formats are defined: a ristretto is a shorter doppio (1:1 to 1:1.5 ratio) and a lungo is a longer one (1:3 to 1:4 ratio). Understanding the doppio is understanding espresso itself.

Doppio vs single espresso: what actually changes

A single espresso uses a smaller basket — typically a 7–9 g dose — and yields 14–18 g of liquid at a proportionally smaller brew volume. In practice, true singles are rare at modern cafes because the smaller portafilter basket is less forgiving: channeling defects and uneven distribution are amplified at lower doses.

The doppio double basket is the standard precisely because it is more consistent. More coffee in the basket means more surface area for water to pass through evenly, producing more reliable extraction and better crema. The larger liquid volume also gives you a louder flavor signal — it is easier to taste whether the shot is under- or over-extracted and make a targeted grind adjustment.

The caffeine content of a doppio is roughly double that of a single — approximately 120–140 mg for a well-pulled double versus 60–70 mg for a single, depending on bean and roast. For anyone who has ever felt that a single espresso did nothing for them, a properly pulled doppio is the correct unit.

What you need to make a doppio at home

An espresso machine. Any machine that pulls at 9 bar with a double basket works for a doppio. Entry-level options like the Gaggia Classic Pro ($499) and the Breville Bambino Plus ($500) both produce proper doubles. The machine matters less than the grinder for shot quality.

A kitchen scale. A scale is not optional for pulling a consistent doppio. Stopping by time or color is unreliable — a scale tells you exactly when the shot reaches 36 g and lets you reproduce that result every morning. A compact espresso scale that fits under your portafilter is the right tool.

A burr grinder. The double basket in most home espresso machines is unpressurized, which means grind quality shows directly in the cup. A blade grinder will not produce consistent enough particle sizes for a well-extracted doppio. A Baratza Encore ESP ($175) or Fellow Opus ($195) provides the grind consistency needed for reliable shots. The machine can be upgraded later; start with the best grinder you can afford.

A pre-warmed small cup or glass. A doppio yields 36–40 g of liquid — about 2.5 oz. Pulling into a pre-warmed 3 oz espresso demitasse or small glass keeps the shot hot for the seconds before you drink it.

How to pull a doppio: step-by-step

Step 1. Warm up the machine fully

Turn on your espresso machine at least 15–20 minutes before pulling. The group head, portafilter, and boiler all need to reach stable operating temperature before extraction produces a properly developed shot. Pulling at the 5-minute mark almost always produces an under-extracted result — the cold brass group head pulls heat from the water during extraction before it has stabilized. Many experienced home baristas turn the machine on before showering; it is ready when they return.

Step 2. Grind 18 g into the portafilter basket

Grind fresh coffee directly into the portafilter basket, targeting 18 g. Use a scale for the dose — a 1 g variation changes extraction time by several seconds, making shot-to-shot consistency difficult. Use your standard espresso grind setting. The doppio is the reference format your grinder is calibrated for — unlike a ristretto (which requires a finer grind) or a lungo (which requires coarser), the doppio pulls at the dial-in grind you established from the start.

Step 3. Distribute and tamp

Distribute the grounds evenly across the basket before tamping. Tap the portafilter gently or use a distribution tool to level the surface. Uneven distribution creates channels where water flows preferentially, leaving other areas of the grounds under-extracting — producing a hollow, watery shot.

Tamp with consistent, level pressure — approximately 30 lbs of downward force applied perpendicularly to the basket. A level tamp surface matters more than exact pressure. Use a flat-based tamper sized to your basket diameter: 58mm for Gaggia, Rancilio, and La Marzocco machines; 54mm for Breville machines.

Step 4. Lock in the portafilter, place your scale, and pull

Lock the portafilter into the group head and place your cup on the scale. Tare to zero and start the shot. Watch the scale, not just the cup.

A properly dialed-in doppio should start flowing within 8–10 seconds (pre-infusion adds a few seconds on machines that have it) and reach 36–40 g in approximately 25–30 seconds total. Press stop when the scale reads 36 g — the remaining drip adds the last few grams. The crema on a well-extracted doppio should be reddish-amber to golden-brown, uniform, and persistent for at least 45–60 seconds.

Step 5. Taste and adjust

Drink the doppio immediately while hot — espresso degrades within minutes as oils oxidize.

If it tastes sour or thin: Under-extracted. Grind one step finer and re-pull. Alternatively, extend the target yield slightly to 40 g if you currently stop at 36 g.

If it tastes bitter, harsh, or dry: Over-extracted. Grind one step coarser. The bitter compounds extract last; if they are dominating, the shot ran too long.

If the shot runs under 20 seconds: Grind is too coarse or dose is too low. Grind finer, or add 0.5 g to the dose.

If the shot runs over 35 seconds: Grind is too fine or dose is too high. Grind coarser, or reduce dose by 0.5 g.

Adjust one variable at a time. Changing both grind and dose simultaneously makes it impossible to know which variable caused the change in result.

The espresso shot spectrum

Best beans for a doppio

The doppio is the most versatile espresso format — it is forgiving enough for nearly any bean and roast level, which makes it the best starting point for dialing in a new bag.

Medium-dark espresso blends are the most consistent producers of a satisfying doppio. Blends from roasters like Intelligentsia, Counter Culture, or Stumptown are formulated specifically around a 1:2 extraction ratio. They produce reliable chocolate, caramel, and nut notes with minimal bitterness and are the least likely to disappoint during the learning phase on a new machine.

Single-origin medium roasts reward extra dialing-in effort. An Ethiopian Yirgacheffe or a Colombian Huila pulled as a doppio at a 1:2 ratio produces fruit notes, citrus brightness, and complexity that blends rarely capture. These beans are less forgiving of grind inconsistency, but the flavor payoff is significant once dialed in.

Dark roasts work in a doppio but require care. Extended roasting drives out aromatic compounds and increases soluble bitterness. A dark roast pulled at a full 1:2 ratio can taste harsh and ashy. Many experienced home baristas pull dark roasts slightly shorter — stopping at 34 g instead of 40 g — to cut the bitterness extraction before it dominates.

Fresh beans are the single most important variable. Beans past 3–4 weeks off-roast are degassed — they produce thin, uneven crema and flat flavor even when extraction parameters are correct. Buy in smaller quantities from local roasters, or subscribe to a roast-on-demand service to guarantee freshness.

Common doppio mistakes to avoid

Not weighing the dose. Eyeballing 18 g introduces 1–2 g of variation that shifts extraction time by 3–6 seconds and changes the flavor of the shot noticeably. A scale solves this immediately.

Not weighing the yield. Stopping a shot by time, by color, or by fill height in the cup is unreliable. A 2-second timing difference at the same grind setting produces 4–5 g of yield difference — enough to make the same beans taste sweet in one shot and bitter in the next. Weigh every shot.

Pulling before the machine is fully warm. A cold group head absorbs heat from the water during extraction, producing under-extracted shots even at the correct grind and dose. The 15–20 minute warm-up is mandatory, not a suggestion.

Using a blade grinder. Blade grinders produce a wide distribution of particle sizes — some fine dust, some coarse chunks — that extract at different rates simultaneously. The result is a cup that is simultaneously over- and under-extracted. A burr grinder at any price level produces dramatically more consistent results.

Tamping at an angle. An uneven tamp surface creates channels where water flows through areas of least resistance, leaving other areas of the grounds under-extracting. Level the grounds before tamping and apply pressure straight down, perpendicular to the basket.

Judging by shot time alone without a scale. A shot time in the 25–30 second range means resistance is roughly correct, but it does not mean the yield is right. Shot time is useful as a secondary diagnostic, but yield in grams is the primary variable to control.

FAQ

Bottom line

The doppio is the espresso format everything else is built on. Dose 18 g of freshly ground coffee, tamp level, and stop the shot when your scale reads 36–40 g — at 25–30 seconds, you have a properly extracted double. Weigh every dose and every yield; adjust grind by one step at a time until the shot flows correctly and tastes balanced. A kitchen scale and a quality burr grinder are the two most important tools for consistent doppios at home — more impactful than which machine you own.

For more: how to make a ristretto at home, espresso shot ratio guide, how to dial in espresso, espresso grind size guide, and best espresso grinders.