Filipinos cook some of their food using vinegar to keep the food fresh as long as possible despite the tropical climate the Philippines is known foru003cstrongu003e. u003ca href=u0022https://en.wikipedia.org/wiki/Philippine_adobou0022 target=u0022_blanku0022 rel=u0022noreferrer noopeneru0022u003eVinegar is mainly added in seafood dishes and chicken to maintain the flavoru003c/au003eu003c/strongu003e; the vinegar not only preserves the freshness of the dish, but for some dishes, it enhances the flavor with time; hence the leftover doesn’t taste like a leftover!