(Image credit: Erin Bashford)

The Coffee Lab

(Image credit: Tom's Guide)I'm Erin, and welcome to the eighteenth episode of The Coffee Lab, the series where we forget coffee snobbery. The Coffee Lab is all about making coffee fun. Join me as I help you kickstart your coffee journey!Starbucks is expensive. There's no getting around that. Some drinks can cost as much as $10 in certain states these days, which is simply ridiculous. If I were to order a Grande Iced Brown Sugar Oatmilk Shaken Espresso at the Starbucks closest to Tom's Guide's Manhattan office, it would cost me $7.57. Yes, almost 8 bucks.Fortunately, you can make it yourself, for far less.I was a Starbucks barista for years, and learned how to make the delicious Starbucks Iced Brown Sugar Oatmilk Shaken Espresso at home. I've even done some coffee math down below to show you how much better this version is for your wallet (and your health, if you use homemade syrup).You only need three ingredients (four if you count ice as an ingredient, and five if you include the optional cinnamon) to make a delicious iced espresso at home. And the best part? It takes about two minutes. Here's my step-by-step guide to making the Starbucks Iced Brown Sugar Oatmilk Shaken Espresso at home, using the Nespresso Vertuo Up, Oatly Barista oat milk, homemade brown sugar syrup, ice, and cinnamon.