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Hawthorn is also called red, red fruit and rouge. It is a dry and ripe fruit of the red or hawthorn of the Rosaceae plant. It is hard, with thin flesh, moderate sweet and sour taste and unique flavor. Hawthorn has high nutritional value and medical value. The elderly often eat hawthorn products to enhance appetite, improve sleep, maintain constant calcium in bones and blood, and prevent atherosclerosis, so Hawthorn is regarded as "longevity food."