Sugar Shaken Iced Coffee (Edit recipe)

Here's my twist on Starbucks' brown sugar shaken espresso, swapping espresso for iced coffee or cold brew—perfect for what I have at home, but feel free to use your favorite! I use a gluten free oat milk typically, but this will work with any (dairy or non-dairy!) You can tweak the sweetness to your taste by adjusting the amount of sugar used. I love to use these jars and I use these plastic lids which don't rust to shake it all up!