Does vinaigrette go bad?

Chef's answer
Balsamic vinaigrette salad dressing that has been continuously refrigerated will generally stay at best quality for about 6 to 9 months..
Frequently asked Questions 🎓
No. I've never refrigerated vinegar of any kind. If you leave vinegar out long enough, it turns to vinegar.
Balsamic vinegar is a safe food additive that contains no fat and very little natural sugar. It's been proven effective to lower cholesterol and stabilize blood pressure. Some research suggests it can also work as an appetite suppressant, and it contains strains of probiotic bacteria..
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