Possible Clues:

• Gave warning that the wine was finished
• This foretold the last of the wine
• Prognosticated after drink's finished
• Left on board, finished forecast
• Thus the dinner was complete, as forecast?
• Thus foretold that the drink was finished
• This gave warning that the wine was finished
• This foretold that it was the last of the wine
• That foretold that the wine was finished
• As has been warned, the wine's finished