Foreskins of circumcised people.
An excised foreskin has a “chewy” texture & ring shape to it. Ironically, in Jewish tradition, circumcision is mandated, however shellfish including squid are prohibited to be eaten as they are unclean. Circumcision has its roots in desert societies including the ancient hebrews, Egyptians & later on in Islam.
And so the mohel cut off his desert calamari!