<p>In all coffee-brewing methods, consistency is key. Different particle sizes of coffee will extract at different rates and controlling extraction rates and replicating them is part of making better and better cups of coffee.</p>

<p>The Rafino seems to be tailored more towards the filter or french press brewer. In these brewing methods, fines, the smaller coffee particles produce the majority of the problem in extraction and off-flavours produced in the end cup. With filter brewing, it restricts water flow and can cause inconsistencies in the extraction. With french press, the fines can overextract due to the full immersion process and cause a lot more bitter flavours to be present.</p>

<p>Filtering out inconsistent coffee grounds results in a much more evenly extracted coffee as the majority of grounds will extract more uniformly without any under or over extracting much more than the rest. This should give a much more balanced and bodied cup assuming other variables are as diligently controlled.</p>

<p>Better grinders can minimise fines but an extra step can ensure particle size consistency. However I'm not sure about the extent of adverse effects of exposing ground coffee to air for so long would be to which I would suggest minimising grounds-sifting time.</p>

CC BY-SA 3.0
2016-07-11T12:11:29.227Z
2016-07-11T12:11:29.227Z
Shiri
<p>I have seen a kickstarter project lately, named <a href="http://thegadgetflow.com/portfolio/rafino-coffee-sieve/" rel="noreferrer">Rafino</a>. It claims to include a set of fine sieves to separate ground coffee into finer levels.</p>

<p>I thought it may be beneficial, mostly for Turkish coffee and in general, to systematically determine the levels of grind for any method.</p>

<p>What would sieving or separating coffee do to the final flavor of the cup?</p>

CC BY-SA 3.0
2016-05-11T15:18:49.427Z
While I can't answer this question, I think a sieve will be most useful for grounds that have been processed with a grinder that uses blades (as opposed to burrs) since the former tends to produce less uniform grounds.
N. York
<flavor><ground-coffee><turkish-coffee>
Coffee ground sieves: Can they make a noticeable change in the flavor?
MTSan
# Coffee ground sieves: Can they make a noticeable change in the flavor?

(Asked by: username_0 on 2016-05-11)

I have seen a kickstarter project lately, named [Rafino](http://thegadgetflow.com/portfolio/rafino-coffee-sieve/). It claims to include a set of fine sieves to separate ground coffee into finer levels.

I thought it may be beneficial, mostly for Turkish coffee and in general, to systematically determine the levels of grind for any method.

What would sieving or separating coffee do to the final flavor of the cup?

**Tags:** flavor, ground-coffee, turkish-coffee

> **Comments:**
> **username_1**: While I can't answer this question, I think a sieve will be most useful for grounds that have been processed with a grinder that uses blades (as opposed to burrs) since the former tends to produce less uniform grounds.  

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## 1 answers

### Answer by username_2 on 2016-07-11. Score: 3 | Accepted answer

In all coffee-brewing methods, consistency is key. Different particle sizes of coffee will extract at different rates and controlling extraction rates and replicating them is part of making better and better cups of coffee.

The Rafino seems to be tailored more towards the filter or french press brewer. In these brewing methods, fines, the smaller coffee particles produce the majority of the problem in extraction and off-flavours produced in the end cup. With filter brewing, it restricts water flow and can cause inconsistencies in the extraction. With french press, the fines can overextract due to the full immersion process and cause a lot more bitter flavours to be present.

Filtering out inconsistent coffee grounds results in a much more evenly extracted coffee as the majority of grounds will extract more uniformly without any under or over extracting much more than the rest. This should give a much more balanced and bodied cup assuming other variables are as diligently controlled.

Better grinders can minimise fines but an extra step can ensure particle size consistency. However I'm not sure about the extent of adverse effects of exposing ground coffee to air for so long would be to which I would suggest minimising grounds-sifting time.


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