Acorns can certainly be eaten, only the flavor of unprocessed acorns will be more bitter, processed acorns are very tasty.
Some acorns (especially black acorns of red oak) contain a large amount of tannin, if not processed directly eat will feel bitter, green acorns of white oak tannin content is low, the taste is sweeter, can be eaten raw or cooked. The basic practice of acorns is to boil for a long time and change the water to remove the tannins contained therein, and after cooking, they can be eaten directly. Acorns can also be baked or and noodles, acorn flour often has a special flavor, because acorns contain more fat, acorn flour must pay attention to storage to avoid hara. Acorn flour can also be used as a coffee partner.
Extended information:
Nutritional properties
Acorn kernel containing starch 50.6% ~ 58.7%, protein 11.7% ~ 15.8%, fat 2.1% ~ 2.6%, ash 1.3% ~ 2.2%, tannins 10.2% ~ 14.1%, the acorn shell contains a large number of pigments and tannins and other components.
According to He Ruiguo et al. (2000) research results show that the available nutritive value of the acorn kernel is close to or slightly lower than corn, but slightly better than rice, is a good use of wild economic plant resources. The lowest content of amino acids in acorns is cystine, followed by tryptophan and methionine, but the relative content of arginine and lysine, the limiting amino acids of cereals, is 52% and 68% higher than that of corn.
The zinc and iron content of acorns is slightly lower than that of corn and sorghum, but the content of potassium, sodium, calcium, magnesium, cobalt and manganese are higher than that of corn and sorghum. Ottgen et al. (1998) showed that: Mongolia oak acorns per 100 g containing VB10.0725 mg, VB20.0950 mg, VC1 4.15 mg, VA1.039 mg; fatty acids are mainly linoleic acid (50.98%), oleic acid (29.41%) is the main, acorns (fresh) VB1 content of the acorns of the green oaks 2.5 times, significantly lower than maize, is 1 / maize, the acorns (fresh) VB1 content of the acorns of the green oaks of the green oaks, is 1 / maize, is 1 / maize, is 1 / maize, is 1 / maize, is 1 / maize, is 1 / maize, is 1 / maize, is 1 / maize.
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