A man and his wife, completely devoted to each other, have sworn to be teetotal all their lives. One of their vows at the wedding was in fact that if either of them ever drank alcohol they would take their own lives (pretty silly in my opinion).
Despite this vow the man is a brewer - though he never drinks his own brew. The man had recently written his will giving everything he owns to his nephew.
His nephew knows this and comes round their house to celebrate New Year.
They both go down into the cellar so the nephew can inspect the latest brew. The man's wife who is washing up sees the nephew come up for some 'apple juice'.
Shortly after he goes back down, she hears her husband scream. She rushes down and sees this:
Her husband is lying dead on the floor next to an open barrel of beer. He has blood on his shirt and a big stone lying on his stomach. His hair is wet (An investigation shows his hair is covered in beer) and he is holding a half-empty cup of alcoholic cider. The floor around the barrel is wet.
The nephew claims a rock fell from the ceiling and killed him. But there was no rock missing from the ceiling
You are called in to investigate.
What happened and how did the man die (There's a clue in the title)