Oregon Caffeine-Free Original chai concentrate is not decaffeined. Instead, the black tea has been substituted with Rooibos (red tea) which naturally contains no caffeine. Rooibos tea also has a lighter and sweeter taste than black tea, which is stronger by comparison. I would have expected a lower "boldness" rating here. But instead, the only difference I could discern between Oregon's Caffeine-Free Rooibos and Original is that the Rooibos version has a much more pronounced honey and vanilla flavor... particularly the honey. Hence a 10 rating for sweetness.