Which method is used in the preservation of pickles using salt?

Pickling is the process of preserving food items in an acid solution, usually vinegar, or in a salt solution called a brine. In the case of pickles, they are preserved in a saltwater solution that also contains vinegar, spices, and other flavorings. The high salt concentration in the brine prevents the growth of bacteria and other microorganisms that can spoil the pickles. The process of pickling in saltwater solution results in a characteristic sour and salty taste of pickles. Boiling may be used to sterilize the jars and lids used in pickling, but it is not the method used to preserve the pickles themselves. Sugar is sometimes added to the pickling solution to balance the sour and salty taste of the pickles, but it is not the primary method of preservation. The addition of coal is not used in the preservation of pickles.