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For some, it's become an afternoon ritual; for others, a "necessity" due to health concerns – decaffeinated coffee is growing in popularity.
Most of you enjoy the taste and aroma of coffee but want to avoid the negative effects of caffeine on your body or sleep. (We also recommend reading our article on yerba mate 👀)
Decaffeinated coffee is thus an obvious choice!
But what exactly is decaffeinated coffee? And how is it made? Does it have the same benefits and aromas as regular coffee?
We'll explain everything!
Check what you've had to drink today and find out if a little decaf might be a better idea now…
Decaffeinated coffee, or decaf for short, is coffee from which 97% of the caffeine has been removed using various extraction mechanisms. This means a cup of decaf goes from a caffeine level of 70 to 140 mg for regular coffee to between 0 and 7 mg for decaffeinated coffee. A cup of decaffeinated coffee is therefore not entirely caffeine-free, and people who are highly sensitive to caffeine should still avoid decaffeinated coffee. However, the difference is significant enough to impact your body, especially if you experience sleep problems.
Decaffeinated coffee appeared in the early 20th century. Decaffeinating coffee without denaturing it or altering its aromas is a challenge. Indeed, coffee remains a fruit and is sensitive to handling. It is therefore a delicate and somewhat traumatic process for a coffee bean.
There are two recognized processes for decaffeinating coffee, each with different methods: the chemical process and the natural process.
To begin, rest assured that the standards governing chemical decaffeination processes are very strict. They guarantee a minimal amount of chemicals remaining in the bean, with no impact on your health. Chemically decaffeinated coffee is therefore completely safe for you. It's just not very popular.
There are two methods for this process:
If given a choice, this is probably the best method of the chemical process.
Green beans are steeped in vats of very hot water, which removes caffeine and aromatic oils. A chemical solvent is then added to this same water. As with CO2, the chemical solvent binds to the caffeine. The water is heated to a high temperature to evaporate with the caffeine, while retaining the oils. The decaffeinated and aroma-deprived beans are then immersed in new vats of water, and the oils are added back. These then re-enter the beans.
This is the least expensive and fastest method, and therefore the most widely used commercially. The chosen chemical solvents are usually ethyl acetate or methylene chloride.
The beans are steam-treated to swell them, giving the solvent more surface area to decaffeinate the beans. The coffee beans are then immersed in a vat of water containing the chemical solvent. The beans are filtered, then steam-treated to remove any remaining water or chemical solvent residues.
After decaffeination, regardless of the method chosen, the decaffeinated coffee beans are dried to restore a normal moisture content, and then roasted.
As its name suggests, the "natural" process involves no chemical products. There are three methods, which are also the only ones capable of producing organic certified decaffeinated coffee, and which best preserve the coffee's aromas.
The carbon dioxide method is similar to that carried out with chemical solvents. It is also quite expensive if not used for large quantities. It consists of soaking green beans in vats of hot water. High-pressure CO2 is then circulated through the vats. This attaches to the caffeine, which is then removed from the beans at the same time. The beans are then filtered, and the water is heated to a high temperature to evaporate the CO2 and retain the caffeine. It can also be passed through an activated carbon filter.
This is THE most sought-after method and the one most often used by micro-roasters because it uses no chemicals, which preserves the coffee's aromas much better, and it removes 99.99% of the caffeine. Contrary to what one might think, this method does not mean a magical rinsing of the beans with Swiss spring water, but it is nonetheless of Swiss origin. It is the longest method, taking several tens of hours for the complete process.
One of the big advantages of this method is the recovery of wastewater and caffeine. Since the water is still saturated with coffee particles at the end of the process, it can be reused, and the caffeine is then used for the pharmaceutical and food industries.
It is also interesting to know that a similar, but less common, process exists: the mountain water method. The soaking water is then composed of glacier water, which makes the final product even purer.
Note that Swiss Water® is a registered trademark, which assures you of the quality of the decaffeinated coffee used through the process logo.
Regarding the process, green beans are soaked in hot water. The caffeine and coffee oils then detach from the bean. The soaking water then passes through an activated carbon filter. This filter collects the caffeine without blocking the oils. The soaking water, saturated with oils, then contains no more caffeine. Thus, when new beans are soaked, they will release caffeine, but not the oils. This water continues to be used to decaffeinate batches of beans, one after another! A beautiful ecological method! 🌿
Used in some organic certified coffees, this method is created from fermented molasses extracted from sugar cane. The fermentation of molasses naturally creates ethanol, which is then combined with vinegar (acetic acid) to produce ethyl acetate (EA).
As with other processes, coffee beans are subjected to hot water vapor to facilitate caffeine extraction. They are then immersed in a vat of water mixed with ethyl acetate obtained from sugar cane. This natural solvent binds with the chlorogenic acids in the coffee, thus releasing the caffeine. This operation is repeated for 8 hours. The decaffeinated bean is then thoroughly rinsed with clear water to eliminate excess ethyl acetate.
Less known than the previous two, but considered a good compromise.
| Process | Caffeine Removal Rate | Aromas Preserved | Organic Certification Possible | Method |
|---|---|---|---|---|
| Swiss Water® | Up to 99.9% | ✅ Very well preserved | ✅ Yes | Water-based, no chemical solvents |
| Supercritical CO₂ | Up to 99.9% | ✅ Well preserved | ✅ Yes | Pressurized gas |
| Ethyl Acetate (natural) | Approximately 97–99% | ⚠ Slight alteration | ✅ Sometimes | Natural solvent from fruits or cane |
| Methylene Chloride | Approximately 97% | ⚠ Flavors sometimes altered | ❌ No | Chemical solvent |
The main benefit of decaffeinated coffee is, of course, its low caffeine content. This makes it an excellent option for people sensitive to caffeine or whose metabolism does not process it well. Be careful, however, not to drink too many cups just because it's "decaf": a small amount of caffeine always remains, and excessive consumption could produce effects similar to those of regular coffee.
In terms of well-being, decaf has less impact on adenosine, a key molecule in regulating our wake and sleep cycles. What does this mean? You can enjoy a decaffeinated coffee in the evening without compromising your night's sleep.
From a nutritional standpoint, decaf retains most of the benefits of regular coffee:
It remains rich in magnesium, good for the heart, brain, and diabetes regulation.
It also contains lignans and chlorogenic acid, antioxidants that help better metabolize glucose and reduce oxidative stress.
It helps protect the liver, notably thanks to diterpenes (cafestol and kahweol), effective against certain toxins like aflatoxin.
Additionally, decaffeinated coffee retains essential minerals: calcium, potassium, magnesium, iron, sodium, and vitamin B3.
And good news: since the beans are decaffeinated before being roasted and ground, the taste remains very similar to regular coffee.
Decaffeinated coffee shares several drawbacks with regular coffee.
Firstly, it can reduce calcium absorption by the body — by about 4 to 6 mg of calcium lost per cup. In the long term, this can slightly increase the risk of fractures, especially in older people or post-menopausal women.
Another important point: decaf also decreases the absorption of non-heme iron (that from plants). This phenomenon mainly concerns women, who are often more prone to iron deficiency. To limit this effect, it is advisable to drink decaf away from meals: about an hour before or two hours after, so as not to hinder the body's absorption of iron.
Not all decaffeinated coffees are equal — and there are real differences in terms of decaffeination method, origin, and aromatic profile, as previously mentioned. Here’s a quick guide to choosing the decaf that truly suits you.
Not all methods are equal in terms of taste and respect for the bean:
| Method | Advantage | Avoid if… |
|---|---|---|
| Swiss Water Process | 100% natural, no solvents | You want a very intense taste |
| Supercritical CO₂ | Solvent-free, very clean | Rarely used for entry-level coffees |
| Solvent-based (methylene chloride or ethyl acetate) | Economical method | You’re looking for “clean label” decaf |
📌 At Ma Caféine, we prioritize gentle methods (water or CO₂), without chemical residues.
As with regular coffee, the bean's origin, growing altitude, variety, and roast influence the final taste:
You like mild, floral coffees → Choose a South American Arabica, light roast
You prefer full-bodied, chocolatey coffees → Opt for a medium to dark roast, Ethiopian or Indonesian
Even decaffeinated, good coffee can offer real subtleties:
Chocolate or hazelnut notes
Fruity aromas
Round or silky body
🧠 Tip: don't choose your decaf "by default" – choose it like any good filter coffee or espresso.
Decaffeinated or not, freshness makes all the difference.
👉 Look for the roasting date, not just the best-before date. And avoid vacuum-sealed decaf with a "flat" taste.
Want a good decaf without compromising on taste? We've selected decaffeinated coffees that are clean, flavorful, and carefully roasted in Quebec for you.
You now know everything about decaffeinated coffee, its benefits, its limitations, and how to choose it well.
But one essential question remains: do you really need caffeine tonight?
We'll help you figure it out 👇
Hesitating to have coffee tonight? Answer these 4 questions, and we'll help you decide.
Also discover our gourmet infusions or our plant-based milks for a comforting caffeine-free latte.
Does decaffeinated coffee still contain caffeine?
Yes, decaffeinated coffee contains a small amount of caffeine. Generally, a cup of decaf contains between 2 and 5 mg of caffeine, compared to 70 to 140 mg for a cup of regular coffee.
How is coffee decaffeinated?
There are several processes:
The Swiss Water® process (using water),
The CO₂ process,
Methods using chemical solvents (ethyl acetate, methylene chloride).
The first two are considered more natural and respectful of the aroma.
Is the Swiss Water® process truly chemical-free?
Yes. It is a 100% water-based process, without solvents. It is certified organic and very popular among health-conscious coffee lovers.
Does decaffeinated coffee taste different?
A little. Modern methods, such as Swiss Water® or CO₂, however, better preserve the aromas. Chemical solvents can slightly alter the taste, sometimes making it flatter.
Is decaffeinated coffee healthier?
It may be suitable for people sensitive to caffeine (hypertension, pregnancy, sleep disorders). However, it contains fewer antioxidants than regular coffee, but it remains a good option.
Can I drink decaffeinated coffee in the evening?
Yes, that's one of its main advantages. It's ideal after dinner or at the end of the day, without disrupting your sleep.
Is decaffeinated coffee more acidic?
Not necessarily. Acidity depends mainly on the type of bean, roast, and brewing method. Some decaffeinated coffees are even smoother than their caffeinated counterparts.
Gaelle, boutique & marketing manager
Has a big soft spot for espresso, but also cappuccino with Sproud pea milk.
Comments
It is a learning topic on the health benefits of Decaf Coffee. Thanks for sharing the useful blog. You mentioned the nutrients and health benefits and disadvantages of Decaf Coffee. Although I drink black coffee and reap its health benefits, I learned a lot about Decaf Coffee from your topic. From now I shall try to drink Decaf Coffee. How much Decaf Coffee can a heart patient drink daily? I like your blog and also prefer organic products.
Merci beaucoup pour l’information ça m’a beaucoup éclairé dans ma recherche
Bonjour, Merci pour votre excellent article qui permet de comprendre aisément les procédés de décaféinisation.
J’aimerai savoir si vous vendez également du café 100% biologique certifié.
Merci pour votre réponse. Cordiales salutations.
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