Coffee has become part of everyone’s daily life. In fact, the culture of coffee drinking has seeped into a segment of society that does not actually care about javas and expressos before. But the way coffee companies have changed the image of drinking coffee from something exclusively done by working people versus coffee drinking as a lifestyle now.
So every morning, you see long lines in different coffee shops, getting their usual dose of a hot cuppa. However, as more and more people are drinking coffee, a whole new trend is starting to come up. It began with people preferring iced versions of their drinks rather than just the hot brew. Then, comes the cold brew revolution.
That’s right, a lot of coffee shops have started offering cold brew bottles to their customers. Each one’s selling point are the kind of coffee grounds used and the steeping time. But why did cold brew suddenly become popular? From how it is made and the health benefits that come with drinking cold brew, it is surprising it was not popular before.
The science behind making cold brew
Let us talk about the first obvious difference of hot and cold brew: the temperature. Science tells us that with more heat, means faster oxidation. And it is this process that affects the flavour, aroma, and acidity of coffee. When we make cold brew, that oxidation process is much slower, which in turn makes the coffee less acidic and more sweet to the taste.
The flavours and acids of coffee is usually extracted at a temperature of about 200 degrees Fahrenheit. This is what brings out that amazing coffee aroma we have come to love; but this is also why hot coffee is more bitter than cold brew. Additionally, this also makes the coffee more volatile, which is why coffee that has been sitting for a long time tastes much worse.
The process of making cold brew
Obviously, in this process, we make use of time rather than heat to “cook” the coffee. For this, your delicious Nespresso coffee capsules can take a sidestep for a bit and make way for this easy cold brew process.
- The first thing you need to do is make sure your coffee grounds are coarse. Think of bread crumbs when you are trying to check, any finer than that will make your coffee cloudy.
- Then, using a sterilised mason jar, put the grounds at the bottom and pour water. Ideally, the measurement is 1:8 coffee-to-water ratio.
- Stir the mixture, close the lid tightly, and then leave it to steep for a minimum of 18 hours to a maximum of 24 hours. You may choose whether to steep inside the fridge or not.
- After steeping, strain the coffee into a large bowl to separate the coffee grounds from the coffee. And then, using muslin sheets or paper towels, strain it back into the jar. Repeat this process until the dark residue is gone. If you see that it is not going away after a few strains, it just means it was ground too fine.
Now all you need to do it serve it! Prepare milk or sugar if some people still prefer pouring those over. But cold brew is usually smoother and sweeter to the taste already.
The main health benefits of cold brew coffee
Obviously, cold brew reduces the acid extracted from coffee. This benefits your gastrointestinal health and your teeth! Note that our body requires a balanced acidity and alkalinity. In the event that there is an unbalance, it would be better if there is more alkaline than acid. Since the food and drinks we ingest changes our pH levels, hot coffee, and too much of it, causes an unbalance that increases acidity. This is why some people feel a discomfort in their stomach — or what is called acid reflux.