Is the Coffee Concentrate still safe to drink/use if it's more than 8 weeks? P&R Team November 12, 2020 04:05 Updated The recommended shelf life is 3 months ambient. Best consumed within 2 weeks after opening and kept refrigerated. Related articles How do I store my Nitro can? What is the ideal time to consume? Does it start to taste different after a set time? Comments 0 comments Please sign in to leave a comment.