How do you make a latte step by step?
Ratio milk and coffee: 1/3 espresso: double shot, 2/3 steamed milk (170 225 ml), 1 cm foam.
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What is the ratio for a latte?
Neither is correct. You water something down by adding water to it. Adding milk to coffee makes it milky, but does not water it down. In the same way, you do not dilute a latte by adding milk, which is by definition a necessary ingredient in a latte.