Of 225 restaurants and bars surveyed in a undercover operation last year, nearly half served alcohol to minors, according to figures released today by the Honolulu Liquor Commission.

The figure is up from 2006, when a survey of bars and restaurants showed 35 percent served alcohol to minors.

Dewey Kim Jr., liquor commission administrator, said the results were disheartening. "Really, it has to stop," he said. "These figures are very high."

Kim said of the bars and restaurants surveyed last year, 106 — or 47 percent — served alcohol to those under 21.

The results come as the liquor commission has been trying to crack down on underage drinking. Last year, the commission issued 327 violations to establishments for serving alcohol to minors.

In 2005, the commission issued 85 violations for serving alcohol to minors.