"give man a fish; and you feed him for a day,
teach man how to fish; and you feed him for life."

hi,
You mean to say the one located near the milkfish's liver? I don't exactly know what is it composed of, but we usually discard it because it has a very bitter taste. However, the rest of the fish's internal organs are safe and delicious to eat. We cook it stewed with vinegar or ferment it with salt.

Thanks,
horton25

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