Espresso To Coffee Caffeine Ratio. Coffee extraction occurs during the preparation of coffee.it is the process of dissolving desirable compounds that occur naturally in coffee beans. Of course, these are simply averages, but you get the gist.
Because of the brewing method, it is known that espresso consists of more caffeine when compared to other coffee drinks. As lighter roasted, higher grown coffees have become more popular over the last few years, brew ratios have been changing as well. The following images below show what you consume when you purchase either an espresso (~1oz) and a standard cup of coffee (8oz).
These compounds are known as coffee solubles.
In espresso, you get 77 mg of caffeine from 1.5 ounces. This broke from the tradition in terms of size, but it allowed customers to keep the same espresso/milk/foam ratio. What is the proper water to coffee ratio for a shot of espresso? A single shot of espresso is generally made with seven to eight grams of ground coffee and results in between one to one and a half ounces of coffee.