I've been working as a Starbucks barista on my campus for over a year now. Don't get me wrong — I love my job. There are few things that make me happier when someone asks for a suggestion and then ends up loving it, or comes back to thank me because their drink came out great.
With that being said, though, there are a handful of things Starbucks customers do that really grind my gears, and I'm sharing this article with the hopes that you can spare your barista the grief and avoid doing them as well.
Related: Never put these in the microwave