Excellent key lime flavor. It's got some sweet/candy-like lime but there's just enough tart to give you a more authentic impression; lime with a bit of zest. Good balance on the sweet and tart. Technically they call this "cookie" but really, it's key lime pie with a pie crust/crumble flavor instead of graham cracker. I like it, it's a nice buttery crumble flavor to me. Clouds are great and there's virtually no throat hit which is impressive considering the citrus.
It's almost impossible to review this without a direct comparison to my favorite key lime pie juice (Chastity Belt). They taste extremely similar. Like some-difficulty-in-a-blind-taste test similar. I'm giving them the same score. It's a great juice but I'll stick with Chastity Belt. It's a much better value money-wise but if I was primarily a B&M shopper then Key Lime Cookie would be a must buy everytime.