Today in 1803, the French flag that had flown just briefly over La Nouvelle-Orléans was solemnly replaced with the Stars and Stripes, and the Louisiana territory belonged to the United States.
For a mere $15 million, the US had acquired 2,144,000 square kilometres (828,000 square miles) of land and had doubled in size - not to mention taking official ownership of the spiritual home of the cocktail, New Orleans.
In honour of the biggest property purchase ever, we are breaking out the crystal mixing glass and stirring up a 1930s New Orleans classic, the sweet yet splendidly complex Vieux Carré.
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