Cheap coffee beans become the main raw material of instant coffee in Asia.

Two years after the introduction of instant coffee, Sachin, a civil servant in Mumbai, stopped drinking a cup of hot ground coffee.

Typical Asian fast and cheap coffee is sweeping parts of the market, and this demand will boost the production of instant powder and reduce the more expensive Arabica beans in the market.

This will be a major market shift that will prompt more people to start drinking coffee in emerging countries, a boon for major growers in Vietnam and Indonesia.

But farmers in Arabica in Latin America and East Africa worry that the rise in cheap robusta beans will reduce their yields.

"Robusta coffee production is rising year by year and will continue to grow, but if we don't have Arabica coffee, I think it will be a less wonderful world," said Rick Reinhart, professional executive director of the American Coffee Association Trade Organization.