Home & Garden0 min ago
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Hi rescuer - vinegar will actually last for ages, but once opened, there will be a bit of further oxidation so after a long time the taste of a vinegar will alter compared to a new bottle. Extract from the Vinegar pages:
How Long Does Vinegar Last?
The Vinegar Institute conducted studies to find out and confirmed that vinegar�s shelf life is almost indefinite. Because of its acid nature, vinegar is self-preserving and does not need refrigeration. White distilled vinegar will remain virtually unchanged over an extended period of time. And, while some changes can be observed in other types of vinegars, such as color changes or the development of a haze or sediment, this is only an aesthetic change. The product can still be used and enjoyed with confidence.
See the site at: http://www.versatilevinegar.org/index.html
To get rid of the sediment just stretch some muslin over the mouth of a funnel and strain off the bits.
Thanks nickmo for a speedy, first-class, interesting reply.
The vinegar site will be very useful. Mind you it gave the tip of adding a drop of vinegar to almost empty salad cream bottles -- this thrifty north country lad has donen that for a long time. And also with sauce and tomato ketchup bottles!