This is because futures, traded in India, are traditionally on food commodities.

This included the ability to restrict or ban the trading in derivatives on those food commodities.

Chefs who have experimented with them agree "they are very good and have potential as a food commodity".

In the trading of food commodities the barter system was typically used for large orders.

Greater agricultural productivity and international trade has caused inflation-adjusted prices of food commodities to decline by 75 percent since 1950.

Indeed, when adjusted for exchange-rate movements, prices of food commodities such as sugar and wheat have declined.

Moreover, most economists say the glut of food commodities is severe and will prevent any general price increases.

With a growing global population food commodities are subject to the same speculation as oil.

The prices of basic food commodities have increased rapidly over the past three years.

The second sector is that of raw materials, particularly food commodities.