Prepare the espresso using a macchinetta or espresso machine. While the espresso is being made, warm up the milk. Froth the milk using milk frother. If you don't have milk frother, you can use a regular whisk instead.
And the last step is to drizzle the caramel on top. At Starbucks, we make two circles around the edges of the cup and then we make a grate pattern in the middle.