I had been disappointed with Dunkin for the longest time because to me their coffee didn't taste the way I remembered from the seventies and eighties. I am from the east coast. Every Dunkin (Donuts) in the vicinity of my travels tasted like this. I'm serious. Now I know their secret, "I think."
I am almost 100% positive that this is how Dunkin Donuts coffee was sold back then. This is delicious to me and I don't usually like flavored coffees sold 'pre-flavored.'