Before testing folk advice in practice, you need to find out why you are doing it and what effect you can expect.
Many such tricks have migrated to modern housewives' kitchens from Soviet times. One example is salt in sunflower oil. This life hack was once very popular.
Let's figure out why Soviet housewives added salt to vegetable oil.
In fact, it's simple. Salt, as we know, is a natural preservative, not as harmful as vinegar.
As for adding salt to oil, this technique allowed larger reserves to be preserved for a longer period.
It's not that butter was a scarce product, it was just common in those days to stock up on food.
The oil was stored in bottles, jars, cans and other containers. Considering that due to improper storage (for example, unsuitable material or contact with air) the product could become somewhat bitter, something had to be invented.
It turned out that if you add salt to the oil, you could minimize this risk.
As for modern housewives, there is no direct need for this. The oil is released in hermetically sealed containers, and the amount used in an open bottle usually ends before the expiration date.
