Bregit lung
From Memory Alpha, the free Star Trek reference
Bregit lung is a Klingon food often prepared on Klingon warships.Commander William T. Riker said he enjoyed bregit lung when it was served aboard the IKS Pagh. (TNG: "A Matter Of Honor")
Alexander Rozhenko ordered a bowl of bregit lung from the replicator in the mess hall on board the IKS Rotarran in 2374. (DS9: "Sons and Daughters")
This dish is not actually the lung of a Bregit. In this case lung (rhymes with Dr. Soong) is a classification of animals that includes reptiles and salamanders in tlhIngan Hol, the Klingon language created by Marc Okrand.
