Recently, I tried a couple of new things at Kaisan. One was the razor clam, chopped up and baked with a mentaiko mayo dressing and tai (snapper) roe (as shown), simmered in a light dashi broth. The texture of the cooked roe was slightly mushy and had a rather rough texture. Think canned flaked tuna. But it was sweet and that little dollop portion was just perfect.
Now I only hope to catch the season for whale's sperm. I have seen a picture of the sushi somewhere and think a ball of slimy, thick white tubes all intertwined. Gross? Hahah, but gross food intriques me.