KGT 95:  many native Klingon alcoholic drinks have names that do not contain the word HIq. Among these are ... the very strong chechtlhutlh (*chech'tluth*). (The fact that chechtlhutlh seems to be made up of two verbs related to drinking - chech ["be drunk"] and tlhutlh ["drink"] - is no doubt coincidental.

It's a strong Klingon liquor that Bringloidi leader O'Dell agreed had more of a bite than the replicated whiskey.  Worf ordered him some from the Enterprise-D's replicator in TNG "Up the Long Ladder".