Perfect Espresso Coffee Ratio. Before attempting to perfect your coffee ratio, you need to start with freshly roasted whole coffee beans. Most baristas agree that a good coffee to milk ratio for a cappuccino is 1/3 espresso to 2/3 milk.
Why is the coffee brewing ratio ideal? An ideal ratio would be between 1:1 and 1:3. According to the specialty coffee association, the best coffee to water ratio for brewing methods is between 1:15 and 1:20.
The ideal ratio is 1:3, that is.
This youtube video gives some more examples of calculating brew ratios. But the meaning of the numbers in the ratio are different. However, a good place to start is 1 part espresso to 2 parts water. How to make a cappuccino: