Ristretto Ratio (1:1.5)

1

ground coffee (dose) — Typically 18–20 g for a double ristretto; same dose as standard espresso

1.5

liquid espresso (yield) — Typically 27–30 g of liquid; stop extraction early relative to a standard double

Dose and tamp exactly as for a standard double espresso (18–20 g). The key difference is grind: a ristretto typically requires a finer grind than a standard espresso to slow water flow sufficiently so that 27–30 g of yield takes the same ~25 seconds rather than rushing through in under 15 seconds. Start extraction, place a tared cup on the scale, and stop when liquid yield reaches 1.5× the dry dose. The shot should run slightly lighter in color at the finish (pale amber rather than dark gold), indicating the early, sweeter extraction window.

• Finer grind is the primary lever: a ristretto should run at the same 25-second total time as a standard shot, just stopping sooner — not rushing through a coarser grind.
• Watch the color change: espresso transitions from rich dark brown to pale gold as extraction progresses. Stop at early-gold, not blonde.
• A ristretto tastes sweeter but is not lower in caffeine — shorter yield with higher TDS means similar total caffeine per shot.
• Ristrettos pair beautifully with steamed milk in drinks where you want sweetness to dominate: flat white, cortado, Gibraltar.
• Do not confuse with Americano dilution: a ristretto is a smaller extraction, not a diluted one.
• Temperature and pressure matter: at 9 bar and 92–93 °C the 1:1.5 window is consistent; higher temperature accelerates extraction and can push bitterness into the ristretto window.

• True short pull (under 20 s)

  Some traditional Italian bars use a coarser grind and shorter time, prioritizing volume speed over extraction control — flavors are more raw and intense

• Double ristretto

  Two ristretto shots pulled into the same cup; common base for flat whites at specialty cafes aiming for sweetness without extra water

• 1:1.25 ultra-ristretto

  Pushed even shorter; very syrupy, almost espresso-concentrate; rare, used in signature drinks or by competition baristas

• Ristretto with light roasts

  Light-roast ristrettos can taste sour; often 1:1.5 works better with medium roasts where early extraction compounds are already sweet

• Espresso Brew Ratio (1:2)

  The standard double; the ristretto yields 25% less liquid from the same dose

• Lungo Ratio (1:3 to 1:4)

  The opposite direction: longer pull, higher extraction, lower TDS

• Cold Brew Concentrate (1:4 to 1:5)

  Another approach to high-concentration coffee, but via long cold extraction rather than pressure

1. 1.Scott Rao, The Professional Barista's Handbook (Scott Rao, 2008)
2. 2.James Hoffmann, The World Atlas of Coffee (Mitchell Beazley, 2014)
3. 3.Jonathan Gagné, The Physics of Filter Coffee (Scott Rao, 2021)

Confidence: high