The first course requires a relatively long time to prepare, so housewives make soup for several days.
There can be different reasons why soup goes sour – for example, the power goes out or the refrigerator starts to malfunction.
Fortunately, there are ways to check the freshness of a dish.
Let's look into this issue in more detail.
The dish begins to have a sour taste and smell, and foam or bubbles form on the surface. The soup may also change color or become darker.
To keep the dish fresh, it is important that the storage temperature of the dish is about 5 degrees. Also, the pan should be covered with a lid.
It is better to add parsley or greens before use. As soon as the soup cools down, immediately put it in the refrigerator.
Earlier we wrote about how to properly add fried vegetables to soup.