What Are the 4 Enemies of Coffee?
Share
Coffee isn’t like other dry goods you can throw in your cupboard and forget about; it’s actually much closer to fresh produce than you may realise. Once roasted coffee begins to degrade. Those delightful aromas, hidden nuances, and complex flavours you cherish in your favourite cup are actually quite delicate, and if left unprotected, they will vanish.
You may have made coffee that tasted bland, lifeless, or flat before and found yourself questioning what happened. There are four usual suspects: oxygen, light, heat, moisture. These are the four enemies of coffee. Fortunately, if you know what they are, avoiding them is simple, even in your everyday kitchen.
1. Oxygen: The Primary Culprit
Oxygen will stale your coffee quicker than anything else. Oxidation begins as soon as your roasted beans are exposed to air, gradually degrading oils and compounds essential for that delicious flavour and aroma.
When coffee is freshly roasted, it will release Carbon Dioxide in a process known as degassing. This creates a tiny natural barrier against oxygen, but after a few days, oxygen starts to take over. Slowly but surely, those bright, lively flavours will become duller until you’re left with a flat, boring cup of coffee.
What you can do:
Reduce air exposure as much as possible. The easiest way to avoid oxygen from interacting with your coffee is by limiting the amount of time your coffee is in contact with air. Place your coffee in an air-tight container, and keep it sealed when you aren’t using it. Small improvements here can have big impacts on the flavour of your coffee day to day.
2. Light: The Hidden Enemy
Direct sunlight can damage coffee as it breaks down the chemical compounds that make up your coffee beans resulting in duller flavour and less complexity. Light doesn’t have an instant impact, but rather the effects are cumulative over time.
Coffee Bean storage containers that see lots of light are almost always clear. Now a glass jar looks better in your kitchen, but it allows light to constantly degrade your precious beans. Even if they aren’t in direct sunlight, those UV rays can cling around and cause harm.
What you can do:
Keep your coffee out of direct sunlight. Storing your beans inside an opaque container, or even a cupboard is perfectly fine. You don’t need to do anything complicated, just store your coffee somewhere dark and away from direct sunlight.
3. Heat: The Catalyst
Heat doesn’t just damage your coffee, it amplifies the effects of all of the things above. Heat causes coffee to go stale faster because it speeds up the breakdown of those volatile compounds we want.
You might not think twice about storing your coffee next to your oven or on top of your fridge, but heat from your stove, kettle, or even that warm spot on your windowsill can affect your coffee over time. These aren’t immediate effects like tossing your coffee grounds down the sink, but they all add up.
What you can do:
Try and keep your beans in a cool, consistent environment. Room temperature is perfectly fine for coffee, so long as you store it away from direct heat or drastic temperature changes. The inside of your cupboard or pantry are good examples of this.
4. Moisture: Avoid at All Costs
Ask any coffee enthusiast where you should not store your coffee and nine times out of ten they will say the fridge. While this may stop your coffee from going warm, it introduces a whole host of other problems. Every time you take the coffee in and out of your fridge, you risk introducing moisture to the beans. When warm air hits cold coffee grounds condensation will form on your coffee. Exposure to this extra moisture can cause your coffee to not only oxidise faster, but spoil your grounds.
Coffee is hygroscopic meaning it absorbs moisture from the air around it. When moisture hits coffee grounds, it will affect extraction rates when brewing. This means that you might end up with under-extracted or over-extracted coffee which can cause earthy, woody flavours.
What you can do:
Avoid moisture at all costs. Store your coffee in an air-tight container and avoid humid environments. For most people, a kitchen cupboard will work just fine.
Simple Storage Tips
Coffee Beans Storage Tips: There are no expensive tricks or elaborate storage devices you need to keep your coffee fresh. By following a few simple guidelines, you can drastically improve the shelf life of your coffee.
- Keep your coffee in an air-tight container
- Store your coffee in a cool dark dry place
- Avoid clear containers or storing your coffee on the counter
- Buy smaller amounts and more frequently
- Grind your beans prior to brewing
Conclusion
If you want to consistently make great coffee at home, storage is just as important as the beans you buy. Oxygen, light, heat, and moisture are everywhere in your kitchen. But if you know what you’re looking for, you can easily prevent them from destroying your coffee.
If you start treating your coffee more like fresh food rather than a shelf stable commodity, you’ll start to notice the rewards. Better flavour, better aroma, and a more enjoyable cup every time.