Add the vanilla syrup and espresso to a 12-ounce mug.
Steam and froth the milk in a frothing pitcher then pour the milk into the mug using a spoon to hold back the foam. Then use the spoon to scoop the foam on top of the drink.
Notes
If you have an espresso machine with a built-in steamer, this is the easiest way to make steamed milk for a latte. Simply fill your frothing pitcher with milk, place the steaming wand in the milk, and steam for about 30 to 45 seconds. Then bring the wand just under the surface of the milk and continue to steam until the froth begins to build. The milk for a latte should reach 160 degrees F. I like using a beverage thermometer to check the temp.
If you don’t have an espresso machine, you can heat the milk up on the stovetop in a small saucepan until it reaches 150 to 160 degrees F. Do not let the milk simmer or boil. Remove from the heat and froth with a handheld frother or pour into a clean French press and pump until frothy.
If you really need to keep things basic, add the cold milk to a mason jar, cover with a lid, and shake until super bubbly. Then microwave (without the lid) until the foam rises to the top and the milk reaches the desired temperature. Don’t let it bubble over!
If you don't have an espresso or Nespresso machine, you can use a Keurig! Lavazza makes espresso K-cups now.
The next best option is to use a bold roast coffee in a french press. If you use brewed coffee this drink is actually a café au lait. If you’re really in a pinch, you can use instant espresso.