Winehouse died in July 2011 at the age of 27 after she resumed drinking following a period of abstinence, Coroner Shirley Radcliffe ruled. She said there were no suspicious circumstances.
Radcliffe said Winehouse "voluntarily consumed alcohol - a deliberate act that took an unexpected turn and led to her death."
A second coroner's inquest was needed because the coroner who conducted the first one lacked the proper qualifications for the job.
The beehive-haired soul singer fought a very public battle with drug and alcohol abuse for years. Winehouse was found in her home in London with a blood alcohol level five times the legal driving limit, and there were empty vodka bottles scattered around her.
Winehouse's family did not attend the 45-minute inquest at St. Pancras Coroner's Court
The Associated Press contributed to this report.
