Final answer:
The shelf-life of opened sauces transferred to a new bottle varies and does not get substantially extended. Oxidation can affect sauces similar to how it affects wine, leading to unpleasant flavors. It's crucial to check the sauce before use, and to follow storage guidelines and use-by dates.
Step-by-step explanation:
When it comes to the shelf-life of sauces after opening and transferring them into a new bottle, it is important to understand that the expiration or use-by date can vary based on the type of sauce and how it is stored. For instance, some sauces might last for months in the refrigerator after opening, while others might have a shorter life span due to ingredients that spoil more quickly once exposed to air. Although you may transfer the sauce to a new bottle, this does not significantly reset the shelf-life of the sauce.
It's essential to note that oxidation can affect certain ingredients within sauces. For example, ethanol-containing beverages, like wine, can undergo oxidation which results in an unpleasant vinegary taste once they have been opened and exposed to air for extended periods. Similar principles apply to sauces, especially those with ingredients prone to oxidizing. Therefore, always check the taste and smell of the sauce before using it, even if it's within the expected use-by period after opening.