You could have the best-derived coffee in the universe, and you would still be able to tell a stale bean when you taste one.
Freshness is one of the greatest elements of producing a great-tasting cup of coffee however its importance is often underrated.
Many factors can contribute to the freshness of coffee beans and I'll be explaining them in more detail as we go.
What do freshly roasted beans look like?
Freshly roasted coffee beans should have a shine and gloss to them. Not greasy but glossy in appearance. This shine is due to the roasting process that brings out the natural flavours and oils from the beans. Dark roasts are especially ‘glossy’ in comparison but still shouldn't be leaking grease.
On the other side, old coffee beans will typically look drier, therefore producing less aroma and less crema (during your espresso pull)
Don’t panic, old beans aren't dead. They’re just old.
Stale beans however - I would avoid. Why waste your time pulling the perfect shot for it to taste dull, sour or flat?
How long do coffee beans last?
Generally, coffee beans can last for quite some time, and even longer when preserved correctly.
If you store your roasted beans in a high quality airtight container, these will stay fresh for approximately 1 - 2 months.
For ground coffee, this is significantly shorter due to the exposure of air to the surface of the coffee. Once ground you should aim to use these within 1 week.
The Enemies of Coffee Freshness
- Air (oxidation)
- Moisture (mold and loss of flavour)
- Heat (speeds up chemical reactions that degrade coffee)
- Light (photo-oxidation)
What is the best container for storing coffee beans?
To store your coffee, a sealed, dark container is great but if you want to go a step further and invest in the best type of container - we recommend using one that is vacuum sealed.
Metal and ceramic containers are the best when it comes to storing beans for freshness as they are non absorbent materials and will not absorb the aromas from your beans.
Glass containers are the next best option but you need to ensure that they are not left on the counter and exposed to too much light and also you'll need to make extra sure you have screwed the lid on tight.
Lastly, we have plastic containers. Generally not advised for long term storage of coffee, however if you are storing beans to be used within a week or 2, this is another viable option.
Can I store coffee beans in the fridge or freezer?
The short answer? Absolutely not.
Unfortunately unlike most other perishables, cold temperatures are not a failsafe method when it comes to freshness.
Mostly because your fridge and freezer contains other food and moisture. The exact things that can spoil your beans and affect your flavour.
Beware: may taste like cardboard or chicken nuggets.
Best practices for storing coffee beans
When you purchase freshly roasted speciality coffee from us , we send it out in a recyclable bag with a small degassing valve. The degassing valve allows the carbon dioxide to release between roasting and consuming.
We recommend transferring directly into a dark, airtight container and store in a cool, dry place.
The best place would be your kitchen cupboard or a similar space that is not overly exposed to light regularly.
Buying Practices
Purchasing coffee little and often is the best way to ensure that you are consistently being delivered the freshest coffee and making the most of its shelf life.
For example, are you a home barista who loves coffee? Look into a regular coffee subscription where you get a bag delivered either bi-weekly or monthly. This way, you know you will be getting the freshest batch of roasted coffee with a consistent taste every time.
How do you ensure you are buying the freshest coffee?
Here are some of our tips:
- Ensure you are purchasing from a company who favour roasting beans in small batches
- Order smaller quantities, more often
- Take note of the roast date from your chosen coffee company
- Look into a regular subscription service
Conclusion
It’s clear to see that coffee beans lose flavour over time. For maximum freshness, store beans properly.
Use an dark, airtight container. Keep in a cool, dark cupboard away from heat.
Don't buy more than you'll use in a few weeks. The fresher the beans, the better they'll taste.
Grind beans yourself right before brewing if possible.
Once ground, use coffee quickly.
Restock with fresh beans often.
Who doesn't love an excuse for another cup?