Pickling is the process of preserving edible products in an acid solution, usually vinegar, or in salt solution (brine). In the latter case, the acid that does the preservative action (lactic acid mainly) is produced by fermentation. The process of pickling is also known as brining and the resulting foods as pickles. Vegetables, fruit, or nuts which have been glazed and coated with sugar are said to be candied . Physically, candy is characterized by the use of a significant amount of sugar or sugar substitutes.