The Mystery of Lobster’s Green Goodies: What That Green Stuff Really Is

associated with the pancreas.

So “lobster liver” is a useful informal description, but hepatopancreas is the more precise biological term.

Frequently Asked Questions

Is the green stuff in lobster poop?

No.

That common guess is incorrect.

The green material is the lobster’s tomalley, or hepatopancreas—an internal organ involved in digestion and nutrient processing.

Is lobster tomalley edible?

Although some people traditionally eat it, health authorities advise consumers not to eat lobster tomalley because it can accumulate contaminants and marine toxins.

Can cooking make tomalley safe?

Not necessarily. Cooking does not

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