The Coffee Truth: Why Coffee Should Not Rest
Introduction
Hello, coffee lover, and welcome to another edition of Coffee Truth. I am your host, Pak Kopi. It is currently harvest time here in Bali, and we are incredibly excited about a great crop of 100% Arabica coffee. However, this video is not about that harvest; rather, it is about the concept of “resting” coffee.
I have recently been involved in a home roasting group on Facebook for the past month, and it has been amazing to witness the enthusiasm and commitment of the people roasting their own coffee at home. Once they start, they become completely sold on the process. The passion is so high that there is a free sharing of information, making it the most active Facebook group I have ever been part of. Despite this enthusiasm, I have noticed several things that I believe are misunderstood regarding coffee, specifically the necessity of letting coffee “rest” after roasting.
Myth #1: Bitterness Equals Strength
There is a widespread mistaken belief that bitterness equals strength, but the opposite is actually true. To understand this, we must look at what happens immediately after roasting versus what happens after the coffee sits.
When coffee is fresh roasted and brewed immediately, it does not taste bitter. This is not because bitterness has not developed, but because it has not yet been “unmasked.” Immediately after roasting, the coffee bean is loaded with elements rich in antioxidants and healthy compounds. These elements create a layer of tastes that are mostly sour and sweet. These flavors overpower and mask the underlying bitterness, making the coffee taste vibrant rather than bitter.
As time passes, this top layer of taste—the acidity and the healthy compounds—decomposes and leaves the coffee bean. Once these masking elements are gone, the bitterness underneath is revealed. Therefore, the longer the coffee sits after roasting, the more bitter it becomes. This bitterness is not a sign of developing strength; it is simply the result of the beneficial elements decomposing.
Key Takeaway: Fresh coffee is not bitter because it is weak; it is not bitter because it is strong and full of healthy elements. As these elements degrade over days or weeks, the bitterness emerges. Thus, non-bitter coffee is the stronger, healthier brew.
Myth #2: Resting Unlocks Specific Flavors
People tend to focus on specific flavor notes because they have been trained to do so, often influenced by barista competitions and the standard flavor wheel. However, the flavor wheel is a tool for identifying specific notes, not for measuring how a coffee enlivens us.
When coffee is too fresh, our taste buds struggle to detect specific flavors because the aforementioned higher elements are still overpowering the palate. The idea that we need to “rest” coffee to unlock specific flavors is incorrect. Nothing new is developing during the resting period; instead, the coffee is simply decomposing. The specific flavors we crave are impossible to detect when the coffee is fresh because the intense, healthy elements are dominating the profile. Resting is not about maturation; it is about the decomposition of those higher elements that initially masked the specific flavors.
Myth #3: The Necessity of a Resting Period
Since many experts seem to agree that coffee must rest before use, people blindly follow this rule without questioning it. This leads to endless debates on “how much should it rest?”
I must admit, I was taken in by this belief myself. In my TEDx talk in 2012, I announced that peak time was 11 hours. At that time, I was using a large commercial roaster and could only test at the 11-hour mark because I couldn’t roast in small samples. However, my perspective has changed since then. I now believe coffee should be used immediately after roasting.
This idea of immediate use is not new; it was developed over 1,000 years ago in the birthplace of coffee, Ethiopia. The traditional Ethiopian Coffee Ceremony involves roasting, grinding, and brewing everything in one continuous session with no time in between. While the traditional process in Ethiopia can take several hours due to manual methods, modern technology allows us to replicate this entire process in a matter of minutes.
We now have the machinery to perform this “coffee ceremony” conveniently, efficiently, and quickly in our own homes. We do not need to save coffee for a later date or wait for it to “rest” to achieve the best experience.
How to Test This Theory
I encourage everyone to test this theory on their own. You must determine if coffee should rest and for how long by testing it side-by-side.
- The Control Method: Brew one cup one day after roasting and another cup four days after roasting.
- Why Side-by-Side? You cannot depend on your memory or ability to distinguish subtle differences from day to day. Your consciousness changes, your environment changes, and your taste buds adapt. Unless you are testing the samples simultaneously, you cannot rely on notes or memory to determine which is better.
Conclusion
I am not the only one who believes coffee should not rest. There are many others who agree with these conclusions. By understanding that bitterness is a sign of decomposition rather than strength, and that resting merely allows healthy elements to leave the bean, you can appreciate the true potential of fresh coffee.
Thanks for watching Coffee Truth. Let’s see how your coffee tastes immediately after roasting versus after it has sat. We will see you next time!
