You do want your balsamic vinegar to be the best quality possible, right? You may also need to adjust the heat. Why did my balsamic reduction turn hard? Some of the highest quality balsamic vinegars available are up to 150 years old. Heat and light will affect the taste of balsamic vinegar, so do your best to keep it away from them. Do you think it will be okay? To meet the high demand for balsamic vinegar in the United States, producers had to come up with an easier and quicker method of production. Therefore a balsamic reduction should last pretty much forever. You have to start with a quality product for it to age into perfection. Since the reduction also contains acid, anything that could have been oxidized has already oxidized. Therefore, most people keep it in the pantry, as it seems to be the best choice. I just noticed that it says Refrigerate After Opening (whoops!). How long does salad dressing last? Don't expect your supermarket balsamic to become a prized, traditional vinegar the longer it sits, though. This is our most frequently asked question!  Our loyal fans are always on the hunt for our delicious products, and because we make over 138 retail items, it is hard to find them all in one store. Salad dressings last for 1-4 months beyond the date printed on the bottle, depending on several variables discussed below. How long does opened balsamic vinaigrette salad dressing last in the refrigerator? These long … This is the type of balsamic found in the greatest quantity on your grocery store shelf. It tastes and smells fine but I'm pretty paranoid about food storage. I like to keep it in glass jars. Troubleshooting Balsamic Reduction Why is my balsamic glaze not thickening? This could mean it just needs more time. In the case of a balsamic reduction, the high acid and sugar content will stop bacterial growth. (credit: 96dpi) After opening the bottle, the thing to remember is that it should be always sealed tightly when not in use. Your stovetop temperature, as well as the size and material of your pan, will also play a role. The shelf life of salad dressing lasts beyond the sell by date or best by date if unopened or stored properly in the refrigerator. Balsamic vinegar was first imported commercially to the United States in 1978 by Williams-Sonoma.Soon thereafter, it was celebrated in fine restaurants and gourmet food shops, but it would be several years before it landed on supermarket shelves and in home kitchens. Is opened balsamic vinaigrette salad dressing safe to use after the expiration date on the package? I have a bottle of balsamic glaze from Trader Joe's that I opened a few months ago and have stored in my pantry. Balsamic Vinegar of Modena I.G.P. TIP: A larger saucepan will reduce vinegar more quickly. 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