Pickling

Pickling is a method of making food last longer. In pickling, the food is put either into vinegar, or in salt water (called brine). This food is often put in an airtight jar. Pickling also changes the flavour of the food. 

The key to pickling is that it produces low pH, 4.6 or lower.Minnesota Department of Agriculture "Pickle Bill" Fact Sheet, www.mda.state.mn.us This kills most bacteria. Pickling can preserve perishable foods for months. Anti-microbial herbs and spices, such as mustard seed, garlic, cinnamon or cloves, are often added.Antimicrobial Effects of Mustard Flour and Acetic Acid, www.ncbi.nlm.nih.gov

Common pickled foods include eggs, onions and other vegetables.

 References 

Other websites

Category:Food preservation