SleepWouldBeNice

SleepWouldBeNice t1_jd891nb wrote

It’s how the Native North Americans made maple sugar/syrup before the Europeans brought cast iron pots: they’d leave the sap overnight, in the morning, the water component had frozen and the ice could be removed leaving the higher-sugar content sap in place. Repeat for a few days and you have syrup. They also placed hot rocks in the liquid during the day which helped steam out some of the water.

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