Will the bean salad dressing that I made ahead of time still work?

Question

I have been making bean salad for a long time. Recently I mixed together the vinegar, oil, sugar and black pepper for the dressing, and put it in a pint sized canning jar with 2-pc lid and refrigerated it, intending on making in the next day or so, but it never happened.

I still have this nice dressing in the refrigerator, and am wondering about food safety - all the ingredients are fine for long periods unrefrigerated, so there should not be a food safety issue, right? I'm also wondering about staleness. I don't want to use it to make bean salad, and have a less-than-wonderful salad. I hate to throw out perfectly good food. Can anyone help me?

Answer 1

It's fine. Vinaigrettes last pretty much indefinitely in the fridge.

If the oil was exposed to too much light or air it might have become a little rancid. Smelling and tasting it before using it on the salad is a good idea. I wouldn't expect anything like that after just a couple months.

Catija alluded to garlic above. Garlic in oil is dangerous because it has an elevated risk of developing botulism- however in a separated vinaigrette all the particulate matter is submerged in the vinegar portion. More than acidic enough to prevent any botulism.