That squishy looking stuff in the yellow bowl!
It is odd. I can't even get my Japanese friends to come to an agreement on exactly what shirako is. I've heard everything from ovaries to testicles to sperm. In dictionaries I find it is translated as milt. I looked up milt. Milt means spleen or...sperm containing fluid of a male fish. Seminal fluid. No matter. We've learned enough for today.