Homemade cold brew, using slow process of extracting the coffee essence and flavour.
How is Cold Brew made?
Cold brew is created by steeping medium-to-coarse ground coffee in room temperature water for 12 hours or longer and then filtering out the grounds for a clean cup without sediment. Unlike regular coffee, cold brew is never exposed to heat.
Does Cold Brew has more acidity?
Because the ground coffee beans in cold-brewed coffee never come into contact with heated water, the process of leaching flavor from the beans produces a chemical profile different from conventional brewing methods.
Coffee beans contain a number of parts that are more soluble at higher temperatures, such as caffeine, oils and fatty acids. Brewing at a lower temperature results in lower acidity and lower caffeine content when brewed in equal volume. It is around 65 to 70 percent less acidic than hot drip coffee or espresso, per part.
Although less caffeine is extracted with the cold brew method, a higher coffee-to-water ratio is often used, between 2 and 2 1/2 times.One study found that a 24 hour cold brew time led to greater caffeine extraction, observing a 15% higher caffeine concentration than that of traditional hot drip coffee.