Any coffee connoisseur will tell you that the notes in each cup play a significant role in the satisfaction and appreciation of the brew. Of course, this depends on various factors.
But, the most critical of these factors is whether your coffee beans are stale or fresh. And know this: storage plays a crucial role in deciding your coffee bean’s freshness.
Ultimately, how well you store your beans will determine whether they become stale.
Why Coffee Beans Go Stale
Your beans can go stale due to a process known as oxidation. This is because the beans are subject to various environmental factors.
The flavor of the coffee can be altered by heat, moisture, and other odors. But oxygen is one of the main causes of coffee beans going stale.
In fact, there are various types of acids, chemicals, and oils in coffee. These are typically known as “solubles” and provide your cup of joe with its unique aroma and taste.
However, once you roast your beans, their aroma and flavor degrade as these “solubles” start oxidizing due to the presence of air.
So, to avoid exposing the beans to oxygen from the air, roasters package beans in vacuum-sealed containers.
Ultimately, your coffee beans’ taste will alter even a few minutes after grinding. Due to this, various specialty coffee shops grind and brew coffee in small batches.
How to Determine Whether Coffee Beans Have Gone Stale
The term “stale” doesn’t necessarily relate to unusable coffee beans. In fact, a bag of unopened coffee can have a shelf life of around six to nine months.
But there are numerous ways to determine whether your beans have gone stale, regardless of their shelf life. You can find a few of these listed below:
Feel the Grinds
The first thing to do is grind your beans. After that, rub the grinds between your fingers to identify their texture. If the texture feels dry and grainy, your beans are stale.
In contrast, your beans are fresh if you feel moisture while rubbing the grinds.
Look for Any Surface Oil
Both stale and freshly roasted beans leave behind a shiny oil on their surface. This happens immediately after roasting when the oils and lipids inside your beans rise to the surface.
However, if you see the surface oil evaporating, the clock is ticking, and the window of freshness is closing.
Typically, the beans will lose their aroma as the oils evaporate over time. In fact, when brewed, they will probably taste dry, bland, or even harsh. It is a clear sign that your beans have gone stale.
However, all beans don’t produce this oily residue. So, use caution when utilizing oil production as a gauge of freshness.
For instance, a light roast won’t have the same sheen as a dark roast as it has a shorter roast time.
Simply smelling the coffee beans might also help you identify whether they are fresh or stale. Fresh coffee beans should have a beautiful fragrance right after being ground.
Comparatively, stale coffee beans would normally have little to no detectable aroma. And no aroma means no flavor! It is a clear tell-tale sign that your beans are not fresh.
Check the Roasting Date
Checking the roast date on your coffee bean’s packaging is one of the easiest and quickest ways to gauge its freshness.
That said, most coffee enthusiasts say the sweet spot for fresh beans is between four and twenty after roasting.
So, while drinking coffee beans roasted four weeks ago is acceptable, you’ll be cutting it close.
By this time, the beans will have lost much of their flavor, sweetness, floral notes, and other characteristics.
Search the Bag for a Valve
Beans produce a lot of carbon dioxide when roasted at a high temperature and then cooled.
The degassing period, which follows roasting, is when this gas release might extend from a few days to a few weeks.
The beans emit CO2 quickly during the first few days of roasting. Then it tapers down to a steadier release afterward.
However, the bag must have a place to release the CO2. If it doesn’t, your coffee bag will inflate and explode over time.
This is why coffee bean roasters include a one-way valve on every bag. So, if your coffee bag doesn’t have one, it clearly indicates that you’ve been using stale beans.
Ultimately, if you taste coffee beans containing high amounts of CO2, they will taste bitter and unpleasant.
Tips to Ensure Your Beans Remain Fresh
At the end of the day, you should always drink fresh coffee. So, on that note, here are a few ways to keep your beans as fresh as possible:
Learn the Basics
Before choosing the best way to store your beans, it is crucial to learn the fundamentals. You should be aware of the answers to questions like how long coffee beans last in reality.
Simply put, coffee beans should be kept away from the following:
- High temperatures
As mentioned earlier, oxygen can oxidize the beans, stripping away their taste. But this process is typically sped up by exposing them to light, heat, and moisture.
Therefore, you must take all reasonable precautions to prevent your beans from going stale.
Don’t Refrigerate Your Beans
Generally speaking, storing coffee beans in the refrigerator is not a good idea.
Of course, it might seem natural to store the beans inside the refrigerator to keep them fresh, as heat should be avoided.
However, a fridge isn’t ideal for storing your beans because it’s not cold enough.
In fact, putting coffee beans in the fridge is the quickest way to decrease their freshness. The only thing that can happen to them is that they will absorb even more condensation and moisture.
So, whatever you do, keep your beans away from the fridge.
Don’t Freeze Your Beans
Just like refrigerating your beans ruins freshness, storing them in your freezer has the same effect on the beans. Let’s take the example of fish and bread to explain this.
Of course, you can freeze these foods and consume them later. However, frozen fish and bread can never be compared to fresh ones.
It is also the case for coffee beans. Similar to refrigerating your beans, freezing them introduces them to moisture.
Plus, when frozen with other food items, the beans absorb all surrounding flavors and odors. The bottom line: fresh coffee beans are always better than frozen ones!
Store Your Beans Properly
Where you keep your coffee beans is one of the most crucial factors. You should rethink your plan if you intend to keep your beans next to an oven.
Otherwise, you risk ruining the flavor and smell. The same is also the case for storing in areas near radiators. The heat will make them go stale.
Furthermore, avoid placing the beans near windows. Its flavor can be easily destroyed by heat and sunlight.
Instead, it’s best to store them in a cool place that doesn’t experience any temperature changes. For example, you can store them in a dark and dry cupboard.
Choose the Right Container
The next thing to consider when maintaining your coffee bean’s freshness is choosing the right container. That said, a coffee container should have the following characteristics:
- It Should Be Opaque
To guarantee that the beans are shielded from light, it is crucial to select an opaque container.
- It Should Be Airtight
Purchase an airtight container to ensure that your coffee beans don’t go stale by coming in contact with air. After all, the air has oxygen, which can oxidize your beans.
- It Should Be Made from Non-Reactive Material
Containers made from non-reactive materials will prevent chemicals from leaching into the beans. So, go for non-reactive metals or ceramic containers.
Purchase Raw or Green Coffee Beans
The last tip to enjoy fresh coffee is to purchase green or raw beans and learn how to roast them yourself.
Unroasted beans easily maintain their flavor for up to a year, allowing you to try various coffee beans and roasting methods.
Moreover, this will allow you to prepare your brew how you like it, since you will have much more control over its flavor.
However, learning how to roast coffee is a discussion in itself and requires a separate blog post. That said, searching the internet for roasting methods will help you learn how to roast beans properly.
Wrapping it Up
The amount of time that has elapsed since the beans were roasted, the storage techniques, and air exposure of the beans impact how well you can appreciate the aromas and flavors of coffee.
These things must be considered if you want the best coffee-drinking experience. With that said, keeping your coffee beans fresh doesn’t involve any rocket science.
So, read this article to learn what impacts coffee beans’ freshness and how they should be stored. Ultimately, the onus is on you to follow these instructions!