This is a collaboration of Calbee with Lotteria and the flavour is based on their Ebi Burger (shrimp pattie burger).
I've never tried it but I assume it would be nice? (Please let me know if you have tried it in the comments!)
Upon opening the bag there is a strong smell of ebi and something that smells like tartare sauce. It makes sense as the picture on the front of the bag shows the burger with cabbage and a white sauce flecked with green.
Each senbei is flecked with red and green bits too, and they smell strongly of shrimp. They are very crunchy and moreish.
The taste is quite different to the regular ebisen, in that the tartare sauce is strong in flavour as well as scent. It's amazing to me how much it tastes like what I imagine the burger to be like in real life!
Mr 5 who is a diehard ebi senbei freak didn't like these, but my husband and I are currently fighting over the bag. As is so often the case, I bought one to try and end up regretting not buying more of them.
I definitely recommend these. If you've tried the burger, drop me a line and let me know how these rate against it! :)