Rice tea is a specialty of Northern Thailand. In Thailand, it's called "Cha Hom Khao Mai" (literally: Tea with scent of new rice).
Rice tea is similar in taste to that of Genmaicha but is produced fundamentally different. For Genmaicha green tea is steamed and mixed with roasted rice. This was done in order to stretch the formerly expensive tea. Thai rice tea however, flavored with a wild growing herb which resembles the taste of jasmine rice. The green tea is roasted Chinese style instead steamed like Japanese green tea. Often, the tea is rolled like Oolong to small beads.