When you order a latte or pull a shot at home, the question of how much espresso is actually in there can get surprisingly murky. Single shot, double shot, ristretto, lungo — the terminology is everywhere, but the explanations usually aren’t.

The short answer: a double shot is the default in modern espresso, the thing most machines and baristas mean when they say “a shot.” A single is genuinely half that. And ristretto versus lungo? Those are about how the shot is pulled, not how many shots there are.

Here’s what each one actually means, how they taste, how much caffeine they carry, and how they fit into the drinks you’re ordering.

The Single Shot: Where Espresso Started

A single shot of espresso — sometimes called a solo — uses approximately 7–9 grams of ground coffee and yields about 1 oz (roughly 25–30ml) of liquid. Done well, it produces a small, intense, syrupy shot with a layer of crema on top.

Historically, single shots were the original espresso standard. Early Italian espresso bars pulled singles as a matter of course — one serving, one small cup, drunk standing at the bar in about 30 seconds.

Today, singles are less common for a practical reason: the smaller dose is harder to pull consistently. A 7g dose leaves less margin for grind variation, distribution errors, or timing mistakes. Even slight inconsistencies affect the cup more dramatically than they would in a larger dose. That’s part of why the industry shifted toward doubles.

In terms of caffeine, a single shot contains roughly 60–70mg, with 63mg being a commonly cited average — though this varies meaningfully by bean, roast level, and extraction.

The Double Shot (Doppio): The Modern Default

A double shot — called a doppio — uses approximately 14–18 grams of coffee and produces roughly 2 oz (50–60ml) of espresso. This is the standard shot in essentially every specialty café today, and it’s what virtually all consumer espresso machines are engineered around.

Look at any modern portafilter basket: the included basket is almost always a double-shot basket sized for 14–18g. Single-shot baskets exist but are often sold as accessories. If you’ve been pulling shots at home without thinking about it, you’ve almost certainly been making doubles.

Doubles became dominant for good reasons. More coffee volume means more consistent extraction — there’s simply more material in the basket, so small variations in grind size or distribution have less impact on the final cup. Professional baristas find doubles much easier to dial in and repeat reliably.

Caffeine in a double sits at approximately 120–130mg, with 125mg as a reliable average. That’s about the same as a standard 8oz drip coffee — a useful benchmark. For more on how espresso caffeine stacks up against other coffee formats, see our guide on whether one shot equals a cup of coffee.

When a barista says “a shot,” they mean a double. When a menu lists a latte or cappuccino without specifying, it’s built on a double.

Ristretto, Normale, and Lungo: Extraction Styles, Not Shot Counts

This is where things get a little technical — but it’s worth understanding because these terms describe something different from single vs double.

Ristretto, normale, and lungo all refer to the ratio of water to coffee grounds, not to how many shots are used. You can make a double-dose ristretto or a double-dose lungo — the dose stays the same, the extraction changes.

• Ristretto (“restricted” in Italian): A shorter pull using roughly a 1:1 ratio — for a 18g dose, about 18ml of liquid. Less water moves through the grounds, so you get a smaller, more concentrated shot that captures the sweeter, fruitier early-extraction compounds before the more bitter elements have a chance to extract. Ristrettos taste sweeter and more intense but have slightly less caffeine than a normale because less water means less total extraction. Some specialty cafés and many third-wave roasters prefer ristretto-style pulls for their cleaner flavor profile.
• Normale: The standard extraction at roughly a 1:2 ratio — 18g in, ~36ml out. This is the baseline most recipes target and what you get at a typical café unless you ask otherwise.
• Lungo (“long” in Italian): A longer pull at roughly a 1:3 ratio — 18g in, ~54ml out. More water flows through the grounds, producing a larger, more diluted shot with more caffeine (more total extraction) but also more bitterness. Lungos are not the same as Americanos — an Americano is a normale with hot water added after; a lungo uses the additional water during extraction, which produces different flavor compounds.

For a deeper look at how dose and yield ratios work, see our piece on espresso ratios and recipe.

How Each Shot Fits Into Drinks

Understanding shot types helps decode café menus and dial in your home setup.

Espresso (straight): A double shot (doppio) served on its own, ~2oz in a demitasse. This is the default unless a café specifies single or ristretto.

Latte: Almost always a double shot with steamed milk (typically 6–8oz total). The milk volume makes a single shot taste weak and watery — the double is necessary for balance.

Cappuccino: A double shot with equal parts steamed milk and foam (~6oz total). Same reasoning: the double holds up to the dairy.

Flat white: A double shot (often a double ristretto in many recipes) in a smaller milk drink (~5oz). The concentrated shot is what gives a flat white its stronger coffee-forward flavor compared to a latte.

Americano: A double shot with 4–6oz of hot water added. The double provides enough body to survive the dilution.

Cortado: A double shot with a small amount of steamed milk (~1–2oz milk to 2oz espresso). Balance is the goal — a single would be overwhelmed by even this small amount of milk.

The pattern: once milk enters the equation, doubles are almost always the right call. The extra coffee volume and flavor intensity is what makes the drink taste like espresso rather than expensive café-flavored milk.

Caffeine Side by Side — and What That Means Practically

Here’s a straightforward comparison:

• Single shot (normale): ~7–9g dose, ~1oz yield, ~63mg caffeine
• Double shot (doppio): ~14–18g dose, ~2oz yield, ~125mg caffeine
• Double ristretto: ~14–18g dose, ~1oz yield, ~100–115mg caffeine (slightly less than a normale double due to shorter extraction)
• Double lungo: ~14–18g dose, ~3oz yield, ~130–140mg caffeine (slightly more due to longer extraction)

A few things worth knowing about these numbers. First, they vary — bean origin, roast level, and your specific machine all shift caffeine content. Lighter roasts tend to retain slightly more caffeine than darker roasts. Second, robusta beans (used in many Italian blends) carry significantly more caffeine than arabica, so a single shot of a robusta-heavy blend can match a double from a 100% arabica.

For most healthy adults, moderate caffeine consumption is well within safe limits — but if you’re thinking about your daily intake, a double-shot latte in the morning puts you at roughly 125mg, and adding an afternoon coffee or two keeps you well under the commonly cited 400mg daily guideline. Our full breakdown is in the how much caffeine is too much guide.

The practical takeaway: if you order a large latte and feel like it’s hitting harder than expected, it’s almost certainly a double — it was designed that way. And if you’re dialing in your own machine at home, starting with a standard double-shot recipe (espresso basics via Wikipedia) before experimenting with ristretto or lungo ratios is the most reliable path to consistent results.