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A turbo shot is an espresso extracted at a higher flow rate than traditional technique — typically in 6 to 15 seconds rather than the standard 25 to 35. To achieve this, the grind is set coarser, which allows water to pass through the puck faster without requiring high pressure to do so. The result is a shot that is faster, often less bitter, and — when done correctly — surprisingly well-extracted. Research published by Jonathan Gagné and Maxwell Colonna-Dashwood helped bring turbo shots to wider attention in the early 2020s.
The conventional wisdom is that espresso needs 25-35 seconds to extract properly. Turbo shots challenge this. When the grind is coarser and the flow rate is higher, water contacts a larger surface area of each particle per unit of time. The extraction yield — the percentage of soluble compounds removed from the grounds — can reach 20-22% or higher even in a very short extraction. The coarser grind also means less resistance to flow and, often, less bitterness from over-extraction of fine particles, since coarser grinds produce fewer ultra-fine particles (fines) than fine grinds.
Start with your normal dose — 18-20 g is typical. Set the grinder coarser than your standard espresso setting, then pull a shot and observe the flow rate. The target is to reach your yield (typically 40-50 g out) in 6-15 seconds. The shot will look pale and flow fast — resist the urge to grind finer out of habit. Taste it: a good turbo shot is sweet, round and well-balanced. An over-coarse turbo shot tastes watery and thin. Adjust from there. Expect to go significantly coarser than feels intuitive if you are accustomed to traditional espresso technique.
Turbo shots are typically pulled at a longer ratio than traditional espresso — 1:2.5 to 1:3 (e.g., 18 g in and 45-54 g out) is common. The higher volume compensates for the lower concentration that results from faster flow. If the turbo shot tastes too weak, the solution is usually to grind slightly finer, not to extend extraction time. If it tastes sour, grind finer. If it tastes bitter, grind coarser. The short extraction time makes the relationship between grind and taste very direct.
Turbo shots suit lightly roasted coffees particularly well. Light roasts are dense and can be difficult to extract fully in a standard 30-second window — the high resistance means fine grinding is required, which increases the risk of channeling and bitter fines. A turbo approach with a coarser grind and faster flow can improve extraction evenness on these coffees. For darker roasts, which are more porous and extract easily, the benefit is less clear and some of the body and texture that makes dark roast espresso enjoyable can be lost in a very fast shot.
If your espresso machine has adequate flow and your current shots taste bitter, harsh or over-extracted, turbo shots are worth exploring. The main requirement is a grinder that can go coarse enough — some espresso-focused grinders have a limited coarse range and may not be able to produce grounds suitable for a 10-second extraction. A pump machine that delivers stable 9-bar pressure works fine. Pre-infusion can be used with turbo shots but is not essential.
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