Acorns are true nuts, and are the fruit of the oak tree. They have a high content of tannins, making them bitter and astringent if eaten raw.
Some varieties are unpleasantly astringent and only suitable as food in time of famine. Other varieties, such as several growing in the Mediterranean area, are sweeter and some are considered comparable to chestnuts, especially in Spain and Portugal. White Oak and Chestnut Oak are two of the sweeter types and the Black and Red Oak are more bitter tasting.
In Cervantes’ Don Quixote, the Duchess wrote to Sancho Panza’s wife:
“They tell me there are big acorns in your village; send me a couple of dozen or so, and I shall value them greatly as coming from your hand...”
Balanophagy is the practice of eating acorns.
According to Greek legend, acorns were a staple food of the Golden Age. They were used as an inferior coffee substitute during the American Civil War. Today they are used mostly to fatten hogs.
There are over 450 varieties of acorn, many of which have been used for food. They are native to all continents except Australia.
There are 262 people in the U.S. listed on whitepages.com with the last name 'Acorn'
(Mark Morton, 'Gastronomica', Fall 2010)
Acorns are high in carbohydrates, and were used as food primarily during times of famine. They are an important source of food for local wildlife.
In 1945 Japan organized school children to gather more than 1 million tons of acorns to make into flour due to dwindling stocks of rice and wheat.
To use: Gather acorns when they are ripe, in autumn. Remove the shells and the caps, and boil the acorns for at least 2 hours, changing the water several times. This removes the bitterness. They may then be roasted in the oven for one hour or so at 350 degrees F. They are now ready to eat or ground into flour.
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