(one tester at 2% and another at 3%, based on the review by u/ConcreteRiver @Reddit)
Sadly, a bit disappointing after what I've read on the forums, and reviews on Reddit. I was really hoping for a strong Boysenberry syrup or jam flavor @ 3% (as stated by the review on Reddit). It's got overtones that lean that direction, but far from solidly securing that objective. I also didn't get the sweet notes that CR mentioned in the review. Though when I think sweet, I think Cap Sweet Strawberry as my point of reference.
It's a really solid flavor though, but seems to be very temp sensitive (max of ~36w) and if I go much beyond that, it's not what I'd describe as burning, but the flavor definitely shifts into a much less pleasant direction. At 2%, it seemed a bit more forgiving on the temp issue (tested up to 42w before starting to notice the shift), but it wasn't quite as "present" as I had wanted.
Initial impressions are less than ideal, considering the price and the percentage requirement to maintain the flavor profile I'm looking for.
The actual flavor components are good, a bit of twang on the back side of a ripe berry, but just doesn't fit the profile I'm looking for. It's a bit "light and airy" while what I'm looking for is heavier and syrupy without reaching Cap S.SB sweetness.
Glad that I tried it though. And perhaps with some more time under the belt, or possibly another boysenberry as the lead, I'll be able to achieve my goal. Either way, I can see potential for this. Better than average, but just not "there"