What this tastes like to me is (flat)cherry sprite. I know that doesn't actually exist but if it did, this would taste just like it. It's got a fruity, cherry+stuff taste on the inhale and a lemon-limey taste with a bite on the exhale. The bite isn't supposed to be alcohol according to the site. It's either the PG or the flavors talking.
If this supposed to be a Mtn Dew flavor, I feel like it's a bit of a failure. Like I said, it's much more like sprite. However, to be fair, I haven't had a non-diet Dew in years so my memory of the flavor might be a little fuzzy.
Decent and I'll admit, unique to my vaping experience. It's not something I feel driven to keep around though. Not my kind of e-juice. I'm probably being a big baby about 12mg but this has a ton of TH, way more than I'd like. Vapor is nice for a 50/50 though.