Multidimensional flavor analysis of Yongchun aged vinegar: Impact of aging on quality and flavor profile

•Multidimensional techniques reveal the comprehensive flavor profile of aged vinegar.•Key flavor-active compounds in Yongchun Aged Vinegar were identified.•Aging enhances vinegar freshness and sweetness, boosting consumer acceptability.•Total soluble solids and volatile flavor compounds are core quality indicators of aged vinegar.