Since South still had not shown her clubs, she took that opportunity now.
South would have shown a singleton if she had held one.
South showed a hand of great power, and North reported ownership of one queen.
South has shown 16-18 total points, while North's hand is largely unknown.
North used three clubs to ask South to show his suit, and then raised to slam.
First, South has shown a balanced hand with about 14 high-card points.
"They see food as being an enabling force that allows the South to show its better side," he said.
South showed his 5-4, and North went for three no-trump.
South showed both her suits, and North took the plunge in four spades.
Following the strong jump shift response, South showed a solid suit by jumping in his turn.