Don Q Signature Release for 2016 is a Single Barrel rum from 2005. Don Q are amongst a number of producers who are making noises about “no addtives” in their rum. They freely invite you to test their wares as they know they have not added anything.
Despite this I still notice a lot of scepticism in the rum community concerning Don Q rums. Much of this based on the fact they produce multi column distilled rums. All I will say to those sceptical about their rums is try one, especially their Anejo or Gran Anejo.