The short answer
A ristretto is a “restricted” espresso: same 18–20 g dose of ground coffee, but roughly half the water, yielding about 15–20 ml of liquid instead of 30–36 ml. The brew ratio is around 1:1 (dose to yield) versus the standard espresso’s 1:2.
Because the shot is cut short, less of the bitter, later-extracting compounds dissolve. The result is sweeter, more syrupy, and more concentrated — with slightly less caffeine per shot since less water means less total extraction.
How the brew ratio changes flavor
Espresso extraction is sequential. The first compounds to dissolve are fruity acids and sugars; bitterness and astringency come later. Stopping the shot early (ristretto) captures more of the sweet, fruity front end and less of the bitter tail.
• Ristretto (1:1): 18 g in → 18 g out in ~15–20 seconds. Intense sweetness, thick body, syrupy mouthfeel.
• Normale / espresso (1:2): 18 g in → 36 g out in ~25–30 seconds. Balanced sweetness, body, and a hint of bitterness.
• Lungo (1:3+): 18 g in → 54 g+ out in ~35–45 seconds. Thinner body, more bitterness, higher caffeine.
Use the Brew Ratio Calculator to convert between these ratios for your basket size.
Caffeine comparison
A standard double espresso extracts roughly 126 mg of caffeine. A double ristretto, with half the water passing through the same puck, extracts around 100–110 mg — about 15–20 % less.
Per milliliter, the ristretto is more concentrated (about 5.5 mg/ml vs 3.5 mg/ml for a normale), but the total dose is lower because less water means less total extraction. If maximum caffeine is your goal, a lungo or a full cup of drip delivers more.
Track your daily total with the Caffeine Calculator.
When to order each
• Order a ristretto if you want maximum sweetness, a syrupy texture, or you’re making a small milk drink like a cortado where concentrated coffee cuts through the milk better.
• Order an espresso (normale) for a balanced shot with a cleaner finish, or as the base for a larger milk drink like a latte where you want the coffee flavor to carry across 8–12 oz of milk.
Many specialty cafés default to ristretto for flat whites and cortados and normale for lattes and Americanos — ask your barista which they pull.
How to pull a ristretto at home
1. Dose 18 g of finely ground coffee into your portafilter and tamp evenly.
2. Start the pump and place a scale under the cup.
3. Stop at 18–20 g of liquid in the cup — this should take about 15–20 seconds.
4. Taste. If sour, grind slightly finer to increase extraction. If bitter (rare for a ristretto), grind coarser.
The grind should be the same as or very slightly finer than your normal espresso setting. Because you’re pulling less water through the same puck, contact time is shorter, so a finer grind compensates.