There are two ways you can go with this. You can be either "Yay, a taste treat that doesn't make us fatter!" or "Oh sweet merciful Jesus, how sad and empty must your life be if you are eating gum for dessert."
Then there's a third angle, which I don't think gets enough public acknowledgment, which is that these peppy, flavorful, calorie-free gums are much beloved by anorexics. Feeling the sharp stabs of hunger? Of course you are. Here, have some gum! It gives you a little kick, tricks your body into thinking that you have eaten something, and all for only 5 calories per stick.
Depressing, right? But true.
Extra must be making a fortune from these two markets, the anorexics and the morbidly obese. Honestly, as a dieter, I will probably buy more of this gum, myself. It is convincing enough to fend off a sugar craving for an hour or so, and sometimes that's a real win.
When you unwrap a stick of the key lime pie gum, the first smell is of creaminess. How can you get "creamy smell" from a stick of gum dusted with a fine white powder, I have no idea. The smell deepens with that classic key lime flavor. It's citrusy, but milder - tempered by the creaminess.
Like all Extra flavors, the gum's initial deliciousness wears off fairly quickly. After the first minute or so, it fades to just a generalized lime-ish-ness sort of taste. What I would call "misc fruity." Not unpleasant, certainly. And a lot less chemical-tasting than many of their gums.
The key lime flavor lingers for quite a while after the gum itself is gone. There is some benefit to this, although more in the "freshness" sense than the "delightful dessert" sense. I often have a stick of gum in the afternoons if I have been drinking coffee all day, particularly if I have something, you know, LINGERING for lunch. (I recently rediscovered the joy of thinly sliced red onions on a sandwich.) The lime taste makes for a decent palate cleanser. And it makes a nice change from the standard "mint" spectrum of gum flavors.
Extra has always had some of the better quality of flavor in its arsenal. A lot of other companies are diversifying into more unusual flavors, but the flavor fidelity is always terrible. Orbit seems to be the worst at this. Any time I get lured into buying a pack of Orbit gum based on the unusual flavor combinations, I always end up sorry, and with a tongue that carries a lingering chemical taste.
Will Extra Dessert Delights satisfy your late-night craving for key lime pie? Doubtful. But hey, you could do a lot worse.