Etymology
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ratatouille (n.)

Provençal dish of mixed vegetables simmered in olive oil, 1877, from French ratatouille (19c.). The first element is of uncertain etymology, the second is evidently touiller "to stir up," which Ayto writes was "applied, often disparagingly, to any stew," and which Gamillscheg writes is ultimately from Latin tudes "hammer."

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