Cannibalism
Cannibalism was the act of eating one's own species. Earth had cannibals at one point, but no longer as of 2151. ()

In 2152, Malcolm Reed became pinned to 's hull by a Romulan mine. Fearing he'd be blown up by the mine, he asked Jonathan Archer not to sever the spikes that held him there. He added that, if he let Archer amputate his leg,  would serve "roast Reed" for Sunday dinner. ()

See also  
 Cannibalization

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Victual culture