For humans, the equivalent is probably those really annoying pistachio nuts that accumulate at the bottom of the bag.

ECONOMIST: Zoology: On the one hand | The

Ambassador JOHN BOLTON (U.S. Ambassador, United Nations): Importation of Persian rugs and pistachio nuts I think are open, so there are a few things we could take a look at.

NPR: United States Pushes U.N. for Action Against Iran

There is walnut or plain, and special products for dieters and diabetics, but most choose the customary pistachio: a succulent, syrupy cube of pastry, sprinkled with the green nuts.

BBC: Cultural encounters in Istanbul

He's got quite a few nuts to crack--the biggest, ironically, Iranian expatriates who control the pistachio industry in America.

FORBES: Nutty