When it comes to brewing coffee, the most common question is whether the filter paper should be soaked in advance. It seems that many coffee learners will encounter this problem.
Why do you need to wet the filter paper beforehand?
The main reason is the problem of making filter paper in the early days. Because the technology is not developed enough, the filter paper often contains too much unnecessary smell. Therefore, before brewing, the filter paper is wetted to let the hot water take it away. Most of those off-flavors.
However, this brewing process has been passed down inexplicably. If you ask a hundred baristas, there will definitely be a hundred different explanations: because of this, why, how, and why!
The filter paper made of modern technology has been very well done. The strange smell that originally had it has been almost eliminated by the bleached white filter paper. There may still be some strange smell. , usually advertises natural, non-bleached brown filter paper, this is a test of what you want to pursue!
When talking about wetting the filter paper in advance, we must inevitably talk about the exhaust problem when brewing coffee; you can see that the inner walls of different filter cups have various wavy riflings, mainly to allow the coffee to have a smooth flow when brewing. More space for the gas to escape.
But if the wavy shape of your filter cup is too subtle, and you wet the filter paper in advance so that the filter paper adheres tightly to the wall of the cup from the beginning, beginners at home may be more likely to let you flush it out at the beginning. When coffee is brewed, a vacuum filter state is formed, causing the normal flow rate to suddenly slow down.
Unless you know how to use a large water column to open the filter channel when you first start brewing, or stir the coffee powder to quickly absorb the water, these are considered slightly advanced brewing methods.
If you are a beginner at home, you really care about the taste of the filter paper. If you must soak the filter paper before brewing, the easiest way is to buy a good filter cup with a deeper rifling, or use a filter cup with a wavy shape. Cake filter paper, this will make it less likely that you will accidentally over-extract the coffee when you first brew it.
This is why everyone admires and likes to use cake-shaped filter paper, but usually such filter paper is more expensive in terms of cost!
Or you can do like me and buy one more ORIGAMI The filter cup itself is a well-ventilated cake wave shape.
If you wet the filter paper with hot water, remember to brew it as soon as you put the coffee powder on it, because the coffee powder that comes into contact with the wet filter paper is already doing the extraction process. If you don’t brew it quickly after you put it in, The problem of over-extraction is definitely more serious than the smell of the filter paper you care about!
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