What Is Pre-Infusion
Pre-infusion wets the puck at low pressure before full 9 bar, evening out the bed so water flows uniformly. It reduces channeling and can smooth sour/bitter edges.
Our top pick
Espresso Machine
Adjustable pre-infusion.
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Editorial note: this guide is compiled from published manufacturer guidance, general best practices, and aggregated owner experience — not hands-on testing. Always follow your machine’s official manual.
Quick comparison
| Pick | Why we like it | |
|---|---|---|
| Espresso Machine | Adjustable pre-infusion. | View → |
| Grinder | Even grind to benefit. | View → |
| Scale | Watch the pre-infusion flow. | View → |
Espresso Machine
Editor’s PickAdjustable pre-infusion.
- + Programmable
- + PID
- − Shorter life
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Even grind to benefit.
- + Espresso
- + Precise
- − Noisy
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Watch the pre-infusion flow.
- + Precise
- + Timer
- − Small
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Buying advice
Many machines pre-infuse automatically (2-3s). On prosumer gear, 2-5s at low pressure helps. Don't overthink it at beginner level.
FAQ
Needed as a beginner?
No - most machines do it automatically.
Benefit?
More even extraction, fewer channels.
How long?
2-5 seconds typically.
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