By Charlotte Reid 
All you need is one item and a little cold water.
Butter is one of the fundamental ingredients in French cuisine. For example, it is used in the preparation of typical French products such as croissants and sauces.
Due to its flavour, versatility and texture, butter has become one of the fundamental pillars on which the main dishes of French cuisine are based.
It is precisely for this reason that the French know all the tricks for storing butter and keeping it in good condition for up to two weeks.
To keep butter fresh and soft for a long period of time, putting it in the refrigerator in its original packaging is not a good choice, as it absorbs unwanted odours and loses its flavour.
The trick to keeping butter from spoiling is to use a so-called water butter dish. This is a device that consists of two parts: an upper part where you place the butter and a lower part that is filled with cold water.
The water butter dish works because when the butter is submerged in the container, the cold water creates a natural barrier that protects the food from bacteria, unwanted odours and the air itself.
In this way, the water butter dish keeps the butter at room temperature and preserves the product, keeping it fresh, moist and at its ideal consistency for one to two weeks.
However, for this trick to be 100% effective, it is very important to change the cold water in the butter dish every two or three days so that the natural barrier protecting the butter continues to maintain its properties. Otherwise, the food will not keep for up to two weeks.