Oat-based drink with Starbucks Arabica coffee and caramel flavour. With sugar and sweetener. UHT. Committed to 100% Ethical Coffee Sourcing in partnership with Conservation International. starbucks/social-impact. Starbucks Oat Caramel Macchiato iced coffee is a tasty oaty twist on a true Starbucks original. It's a chilled blend of bold espresso and creamy oat base with subtle hints of caramel. A plant based iced coffee with no compromise on taste. A refreshing pick me up, easily accessible iced coffee which can be consumed anywhere: on the go or at home. To enjoy our tasty Starbucks Oat Caramel Macchiato at its best, serve it chilled or over the ice and gently shake to wake the flavours. Be sure to look out for our other plant based iced coffees: Oat Cappuccino.