Mocha, Latte, Cappuccino, Americano, in the same portion size, Americano is the most bitter.

The degree of bitterness of the four for the same portion size is: Americano > Cappuccino > Latte > Mocha. In other words, mocha is the sweetest and americano is the most bitter.

Mocha, Latte, Cappuccino, Americano these coffees are all made on the basis of Italian coffee (Espresso/Espresso).

The traditional Americano (Americano) is very simple to make, just espresso with water, no sugar, and has a bitter flavor.

Traditional Cappuccino (Cappuccino) is 1/3 espresso, 1/3 steam milk and 1/3 frothed milk; coffee and milk are generally 1:1.

The ratio of coffee, milk and frothed milk in a latte is generally 1:8:1, which has a richer, creamier flavor than a cappuccino.

Mocha is a chocolate coffee that combines aromatic coffee, rich milk and sweet chocolate for a sweeter flavor.

Expanded:

Coffee drinkers will know that espresso is all about espresso. espresso"), which was born in 1905.

The so-called Americano is, in fact, espresso with water; latte is the Italian "milk", meaning espresso with milk; cappuccino is espresso with milk and milk froth; mocha is milk coffee with chocolate; macchiato is espresso with milk froth, and if you call it a caramel macchiato, it's often milk coffee. If it's called a caramel macchiato, it's often milk coffee with caramel syrup and covered with milk foam.

In Italy, Espresso is the most popular basic coffee. Almost every Italian, after their daily work, will order a cup of Espresso at the street café as a spice of life.

Reference:

China Daily - Who says lattes, mochas and cappuccinos are silly