Cooking in water is a common cooking technique used to prepare food. Boiling is the most common form of cooking in water, which involves submerging food in boiling liquid and allowing it to cook until done. Boiling is often used to cook vegetables, pasta, and other ingredients. Boiling can also be used to sterilize items, such as jars for canning. Boiling is a simple and effective way to cook food quickly and evenly.