I wish I could say that this is the first time I've ever had Pop Rocks in a chocolate bar, but it's not. That being said, I still think it's a brave and creative thing to do it. Don't get me wrong, you can't just mix Pop Rocks with any chocolate and instantly get a good treat. This combination might be one of the most difficult chocolate combinations to get right. There are many details that must work just right in order for a bar like this to work.
First of all, the ratio of chocolate to Pop Rocks is absolutely essential. If you're munching on a bar that promises to pop in your mouth and you get virtually no pop, you can pretty much guarantee disappointment. Too many Pop Rocks is also a problem. If you bite into a bar and your mouth explodes with Pop Rocks the chocolate element is lost. A perfect balance is essential when mixing Pop Rocks with milk chocolate. You want a few pops in your mouth as the chocolate melts in your mouth. It's also fun to have a few more pops as the melted chocolate coats your throat. After each bite you want a few minutes of crackles so you truly remember this treat as unique.
The second thing that a bar like this must have, is high quality chocolate. As I described above, you want the chocolate to melt in your mouth so the Pop Rocks explode at just the right time. You also want the chocolate flavour to dominate. I've never tried a bar with stronger flavoured Pop Rocks than the chocolate, but I imagine it wouldn't be that great. This bar doesn’t fault there at all, the chocolate melts just right, and it tastes great too.
This bar works this gimmick very well, the ratio of chocolate to Pop Rocks is great and the chocolate itself is of a fine quality.