Ok, not really key lime unless you use actual key lime juice but that's hard to find everywhere but southern Florida. But this goes in the same vein as my other recipes on making your own yogurt cups- don't pay for artificial colors and flavors when you can control the content! I recommend using Greek yogurt or heavily strained plain yogurt for this not just for the creamy consistency, but because the main flavanoid here is purely liquid instead of a semi-solid like pumpkin, so normal plain yogurt would get too watery.