The rich, extra-caramelly flavor of homemade butterscotch sauce is worth the comparatively paltry amount of work it takes to make it. However, every recipe you can find for this syrupy partner to homemade vanilla ice cream makes way more than you can use at one time (unless you're cooking for a whole football team). That's because you need a certain amount of sugar in the pan to control the heat efficiently, and temperature control is of paramount importance when you're creating any sugar-based treat.
Fortunately, a sufficient quantity of sugar also acts as a natural preservative, so butterscotch syrup, which is primarily sugar, can easily last for up to eight weeks when it's stored properly in the refrigerator and up to six months in the freezer. Exactly how long it lasts depends on a number of factors, including the ingredients you use and how well you prepare it for storage. Proper butterscotch syrup storage When your butterscotch syrup is ready, allow it to cool slightly on the counter before transferring it to an airtight container.
Once it is cool enough to comfortably touch, you can pop it in the refrigerator for up to eight weeks, depending on the original freshness of the other ingredients. You can tell if your butterscotch has gone bad because the cream and butter will separate and develop off flavors. If you don't think you'll use the sauce in the next couple of weeks, it's time to freeze it.
It's best to avoid freezing it in glass containers, since they can crack .