Starbucks Iced Coffee With Milk
Where to get it: Some Starbucks locations, most big name grocery stores
Though this is billed simply as coffee and milk, this is undeniably sweet — sweeter than the Illy, even — and weirdly synthetic tasting for something that doesn't contain, according to the nutrition label, anything other than coffee, milk, sugar, and pectin. After thinking on it for a bit, it tastes kind of like the stuff you'd get from a rest area vending machine, which is, you know, not bad for a rest area vending machine.
Takeaway: Oddly artificial tasting — the only selling point is its low cost.