If you have an espresso machine, use a light roast to brew two shots of espresso. If not, you can use a French press, Keurig, drip coffee maker, etc. The trick is to brew a strong yet small (about half a standard cup) coffee. Add sugar or sweetener as desired and place to the side.
The next step is to warm your milk. Almond milk and dairy milk are similar to work with. The easiest way to heat it is with a steaming tool. Otherwise, you can do so on the stove. In a small saucepan, heat about 1 ½ cups of almond milk on medium heat. You don’t want to bring it to a boil. Instead, whisk consistently in a rapid motion until the milk is hot and slightly frothy. Remove from heat.
Optional: Once removed from the heat, you can add a small portion of the milk to a separate bowl and continue to whisk to create a thicker foam. A latte should have one part coffee and three parts milk. Within the milk, the majority of it should be steamed with only a small portion on top being foam. Many people prefer to eliminate the frothed portion, however; especially if they are making their latte at home.