Some Studies indicate that iced coffee is chemically superior to hot coffee. It makes perfect sense that the less acidic drinks causes less digestive problems and lead to a better taste. As an avid consumer of both hot and cold coffee, I think that the evidence presented in this article is accurate. It also supports my anecdotal claim that iced coffee is superior. Now I know that I have science to support my preference when it comes to choosing iced coffee over a hot cup.
Now that we have established exactly how coffee effects the body, I decided to look into the specific differences in cold and hot brewed cups. According to Elite Daily there is no major difference in the caffeine content of either type of coffee. Both iced coffee and hot coffee have similar doses of caffeine and therefore effect the mind the same way. However, the website found that iced coffee is actually healthier for you than hot coffee. This is due to the fact that the acidity of cold brewed coffee is almost three times less than hot coffee. The less acidic a drink is, the better it is for a persons digestive system. This explains why iced coffee tends to cause less tension in a persons stomach than a hot cup. Another benefit found in cold brewed coffee is the taste. Although taste is a usually a matter of opinion, a study done by the UCLA Division of Life Sciences found that the higher acidity in hot coffee leads to a more bitter taste. In contrast, the typically alkaline environment of an iced coffee has less acid and more flavor
While heat helps extract more caffeine, cold brew is typically brewed as a concentrate, with a higher than normal coffee-to-water ratio of between 1:4 and 1:8, compared with a more typical drip coffee ratio of 1:15 or 1:25. This alone leads to a higher caffeine concentration.
However, as a concentrate, cold-brew coffee is also typically cut with water or creamer, which levels things out a bit.
Still, even some cold brews that are brewed and sold as ready-to-drink (RTD) beverages contain higher levels of caffeine than your standard drip brew.
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