Flavored coffees?
 

So today I had a coffee from Einstein Bros. Vanilla and it was amazing! Just brewed coffee. Some websites/companies say their flavored coffees (just brewed) have more calories than regular brewed coffee. Any thoughts or counts for this? I don't understand how they can have more but for example Seattles Best site says their flavored coffees are like 30 calories....

Just asking for count ideas or thoughts! I loved the coffee but just wanna make sure I get accurate counts and not drink a bunch of unknown calories!

They add a syrup or coating to the coffee that adds calories.