One of the oldest and most ubiquitous food seasonings. It is a mineral composed primarily of sodium chloride. Salt is essential for life in general, and saltiness is one of the basic human tastes. Edible salt is sold in forms such as sea salt and table salt which usually contains an anti-caking agent and may be iodised to prevent iodine deficiency. An anti caking agent is an additive placed in powdered or granulated materials, such as table salt or confectioneries to prevent the formation of lumps (caking) and for easing packaging, transport, and consumption.as well as its use in cooking and at the table, salt is present in many processed foods.