1:5 to 1:8
There is no fixed ratio of how much milk should be added. Usually, the ratio of espresso to milk for a normal latte varies from 1:5 to 1:8. The main factors affecting the ratio are the flavor profile and the characteristics of the espresso.
If you don't like the coffee flavor to be too strong, you can adapt to add more milk so that the milk flavor will mask more coffee flavor, or if you like a strong coffee flavor, add less milk so that the coffee flavor will be more pronounced. This is a change in the proportion of milk according to personal flavor.
The right way to drink a latte
Latte is a coffee that utilizes the principle of specific gravity to create a change in the level of the coffee to increase the visual effect. First of all, the milk and fructose are mixed to create two distinct layers of black and white, creating a delicate visual effect; then a little milk froth is added, followed by the formation of three layers of pearl white, coffee brown and ivory gradient layers, creating a warm feeling of elegance and romance.
Mixing coffee with fructose increases the proportion of coffee, forming a change of coffee in the bottom and milk in the top. Or instead of milk froth, add fruit sweat to increase the color change.
Floating on top of the latte is milk froth, which is made with a milk frother or steam valve on the coffee machine. With milk froth, you can make the coffee smoother, and you can also do tricks on it, drinking latte coffee with a stirring stick stirring directly on the line.