Should I wash my coffee beans?


 

When you’re just getting into the world of specialty coffee and learning everything you can about it, there are going to be times when something sounds like it makes sense but then you start to wonder if maybe it doesn’t.


For instance, does one really need to wash their beans before brewing?

It’s a question all so called coffee folk have asked themselves at some point or another when they first see washed coffee on a bag.

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Well, there’s more to it than that—and luckily for us, there is also an answer.

No, you shouldn’t wash your beans before brewing them; here’s why.

 

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A Brief Introduction to Coffee Washing

Before we get into the nitty-gritty of why you shouldn’t wash your coffee beans, let’s first take a second to talk about what coffee washing is.

Coffee washing is the process of rinsing farmed coffee beans (or seeds) with water so as to remove some of the pulp that may still be clinging to them post-harvest and sometimes after you take them home. 

This is something that’s done in the majority of coffee-growing countries, including the Brazil and Colombia.

The idea behind washing the beans is simple: to get rid of any impurities that may be on the surface of the beans, and to get rid of any lingering fermentation.  

 

  

With regards to green beans, as beans are hygroscopic, they will absorb more water before roasting if they are washed.

Therefore, before roasting, they must be dried again. In addition, washing leads to unevenly wet coffee seeds that will char before they caramelize.

As a result, there will be burnt beans on the outside and raw beans on the inside, resulting in a burnt grassy flavor.

Furthermore, green beans are washed prior to packaging and are already packed at 10 – 12 percent moisture. 

Thus, additional washing is unnecessary.

How is Coffee Brewing Different When Beans Are Roasted?

As we mentioned above, coffee beans are covered in pulp before they’ve been dried or processed.

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When you’re brewing coffee, you want all of the flavours that the coffee bean has to offer, and you don’t want anything to get in the way of that.

The difference in the flavour of coffee between washed and natural is significant. Washed produce a variety of flavours, whereas un-washed (or natural) can have boozy fermented tastes.

  

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