What is the typical shelf life of most commercially prepared sauces once opened?

The typical shelf life of most commercially prepared sauces once opened is indeed between 7 to 14 days in refrigeration. This duration is based on the preservation methods used in the production of the sauces, which often include ingredients that, while acting as preservatives, still require proper storage conditions to maintain safety and quality once the product is opened.

After being opened, sauces are exposed to air and potential contaminants, which can lead to spoilage. Refrigeration slows down the growth of microorganisms, but it doesn't entirely stop it. Therefore, it is essential to consume these sauces within the recommended time frame to ensure they remain safe and of good quality.

While some sauces, like ketchup or soy sauce, might last longer due to their higher acidity and sodium content, the general guideline of 7 to 14 days is a safe standard for most products. The other options suggest durations that exceed the common recommendation or imply indefinite shelf life once opened, which does not account for the diminished quality and safety after opening.