The drip coffee bag was born in Japan in the 1990's and has grown to become one of the standard styles of single serve coffee. Presently, sales of drip coffee bags have topped 1.4 billion annually (2011) and their popularity has been seen expanding throughout Asian countries such as Taiwan, South Korea and China. Drip coffee bags also made their debut in the U.K. in 2010. Surely it won't be long until the drip coffee bag will be a standard in your country too!