Quick answerThe bloom is the puffing and bubbling you see when hot water first touches freshly ground coffee: trapped CO2 escaping. Pour about twice the coffee's weight in water, wait 30-45 seconds, then continue brewing. This lets water reach the grounds evenly for better flavor.
How to bloom
- Add ground coffee (e.g. 20 g).
- Pour 40 g of hot water to wet all grounds.
- Wait 30-45 seconds.
- Continue your pour.
What bloom tells you
Big bloom = fresh coffee. Little or none = older beans.
Frequently asked questions
Do I bloom for French press?
Yes, stir and wait 30 seconds before topping up.
Does drip coffee bloom?
Some machines have a pre-infusion setting.
Why does fresh coffee bloom more?
More CO2 remains in the beans.
See a real bloom: fresh Al-Aqeeq coffee.
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