Ristretto is a short espresso, an espresso that was turned off earlier than necessary.
The first substances that come out of coffee are minerals, salts, acids, sugars and caffeine. Ristretto has the most minerals, salts and acids, few sugars and virtually no caffeine. Some believe that Ristretto is the most invigorating drink, it seems so as it immediately hits the receptors. When you take the first sip, you have a crazy taste in your mouth, but you have practically no caffeine intoxication. But after 20-30 minutes the vigor effect disappears. Caffeine is not easily washed out, and the longer the water is in contact with the coffee, the more caffeine will be in the drink. One of the strongest coffee drink is Cold Brew Coffee, which is brewed for 12 hours or more.