Salted duck eggs not only contain protein, fat, calcium and other nutrients, but also increase their nutritional value because part of protein is degraded into amino acids which are more easily absorbed by human body during curing. In addition, salted duck eggs are more salty than ordinary duck eggs and can be eaten as side dishes. From the appearance, the redder the yolk of salted duck eggs, the better. Because protein degradation in salted eggs with red hearts is more effective. So the nutritional value is higher.

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