The difference between cold brewed coffee and hot brewed coffee iced coffee summer ice drink Italian mix of coffee beans
We all know that every coffee powder contains thousands of oils, chemicals and acids. These substances are collectively referred to as
Soluble matter. It is these soluble substances that give the coffee mellow and delicious. The process of coffee extraction can effectively release these substances.
The brewing methods of coffee are mainly divided into two categories according to temperature and time:
1. Hot brewing coffee: when it comes to hot brewing coffee, we naturally think of dripping coffee made from an old-fashioned home coffee machine or hand filter pot. The making of this kind of coffee is very simple. All we have to do is pour hot water over the coffee powder. We can often have the classic drip coffee in the restaurant. But in the coffee shop, baristas use professional coffee machines to greatly increase the rate of coffee production. The espresso they make is more fragrant, sour and bitter.
two。 Cold brewed coffee: the easiest way to make cold brewed coffee is to soak the coffee powder in cold water at room temperature, wait for hours or even days, and then filter the solution repeatedly. The coffee is more profound, bitter and sour, richer and more concentrated than traditional hot brewed coffee. Especially in the hot summer drinking, the cool taste makes people can't stop!
Chemically speaking:
When coffee comes into contact with water, its soluble substances begin to react, resulting in the aroma and taste of coffee as we know it.
The soluble substances in coffee will begin to dissolve under 195205 ℉ of water, so hot brewing coffee should theoretically be richer in taste and taste than cold brewing coffee. Hot water will also accelerate the dissolution rate of soluble substances, making them very volatile, so a large number of substances in coffee will evaporate with water molecules at high temperatures, entering your nasal cavity and making you feel the aroma of coffee.
But accelerating the dissolution of matter also brings some problems. Freshly boiled water can cause some chemical elements in coffee to decay or oxidize, just as iron rust when exposed to large amounts of oxygen, making coffee sour and bitter. If you don't like these two flavors, cold brewing coffee is definitely your best choice.
The oxidation and decay of chemicals also occur in the process of cold brewing coffee, but its rate is very slow, so the bitter and sour taste of cold brewing coffee is softer than that of traditional hot brewing coffee. In addition, slower oxidation and decay make cold brewed coffee easier to preserve, usually for 2-4 weeks in the refrigerator. By contrast, hot brewing coffee has a shelf life of up to one day.
- Prev
To make perfect espresso, you can't milk it repeatedly and mix it with coffee beans to make coffee.
1. Keep the handle and filter bowl at high temperature. Low temperature handles and filter bowls will completely destroy a good cup of coffee. The handle and filter bowl will directly affect the temperature of coffee extraction. If the temperature is too low, the coffee will not be fully extracted, and the temperature of the Italian espresso will become lower, thus affecting the overall coffee experience. In addition, be sure to wipe or clean the coffee before making it each time.
- Next
The three laws that affect coffee: the proportion of gouache to gouache, fine coffee beans.
1. The quality of water do you like the smell of tap water in your house? This is a very serious problem. Maybe you live in a big city where the tap water filtration system is so advanced that the quality of the water you use is even comparable to that of bottled water; maybe you live in the suburbs and the tap water filtration system is old and the tap water always has a strange smell. Unless the tap water you live in is of high quality,
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