How to Bloom Coffee
Blooming means wetting the grounds with a little water and waiting 30 seconds so trapped CO2 escapes. Skipping it causes uneven extraction and sour spots.
Our top pick
Gooseneck Kettle
Controlled bloom pour.
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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 | |
|---|---|---|
| Gooseneck Kettle | Controlled bloom pour. | View → |
| V60 | Blooms visibly. | View → |
| Scale | Measure the bloom water. | View → |
Gooseneck Kettle
Editor’s PickControlled bloom pour.
- + Precise
- + Pretty
- − Pricey
Free shipping on eligible items
Measure the bloom water.
- + Precise
- + Timer
- − Small
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Buying advice
Pour twice the coffee weight in water, swirl, wait 30s, then continue. Fresh beans bloom most - a flat bloom means stale coffee.
FAQ
How much bloom water?
2x the dose in grams.
Wait time?
30 seconds.
No bloom?
Uneven, sour extraction.
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Want exact doses? Use our free brew calculators.