Many of these substances are also used for other purposes, such as medicine, religious rituals, cosmetics, perfumery or eating as vegetables. For example, turmeric is also used as a preservative; licorice as a medicine; garlic as a vegetable. In some cases they are referred to by different terms.

In the kitchen, spices are distinguished from herbs, which are leafy, green plant parts used for flavoring purposes. Herbs, such as basil or oregano, may be used fresh, and are commonly chopped into smaller pieces. Spices, however, are dried and often ground or grated into a powder. Small seeds, such as fennel and mustard seeds, are used both whole and in powder form.

Classification and types

Spices can be grouped as:

• Dried fruits or seeds, such as fennel, mustard, and black pepper.
• Arils, such as mace.
• Barks, such as cinnamon and cassia.
• Dried buds, such as cloves.
• Stigmas, such as saffron.
• Roots and rhizomes, such as turmeric, ginger and galingale.
• Resins, such as asa foetida

Herbs, such as bay, basil, and thyme are not, strictly speaking, spices, although they have similar uses in flavouring food. The same can be said of vegetables such as onions and garlic.

Early history

The earliest evidence of the use of spice by man was around 50,000 B.C. The spice trade developed throughout the Middle East in around 2000 BC with cinnamon, Indonesian cinnamon and pepper. The Egyptians used herbs for embalming and their need for exotic herbs helped stimulate world trade. In fact, the word spice comes from the same root as species, meaning kinds of goods. By 1000 BC China and India had a medical system based upon herbs. Early uses were connected with magic, medicine, religion, tradition and preservation.

A recent archaeological discovery suggests that the clove, indigenous to the Indonesian island of Ternate in the Maluku Islands, could have been introduced to the Middle East very early on. Digs found a clove burnt onto the floor of a burned down kitchen in the Mesopotamian site of Terqa, in what is now modern-day Syria, dated to 1700 BC .

In the story of Genesis, Joseph was sold into slavery by his brothers to spice merchants. In the biblical poem Song of Solomon, the male speaker compares his beloved to many forms of spices. Generally, Egyptian, Chinese, Indian and Mesopotamian sources do not refer to known spices.

In South Asia, nutmeg, which originates from the Banda Islands in the Moluccas, has a Sanskrit name. Sanskrit is the language of the sacred Hindu texts, this shows how old the usage of this spice is in this region. Historians estimate that nutmeg was introduced to Europe in the 6th century BC .