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The lemonade stand has symbolized American childhood and values for more than a century. Norman Rockwell even created a classic 1950s drawing of children getting their first taste of capitalism with the help of a little sugar and lemon. Yet like apple pie, the lemonade stand is far older than America itself.
The lemon’s origins remain uncertain. A related fruit with far less juice, the citron, slowly migrated west until it reached Rome in the first few centuries A.D. Citrons were prestige items for the rich, prized for…