Nativefoodstore Kattuyanam Rice it has a very low glycemic index level when compared to other traditional recipe. Soak 2 to 3 hours before use Can be consumed as Idli puttu idiyappam. The rice can be used to make Idlis Dosas and many other edibles. Cultivation: In ancient times this rice was grown in the forest but now Kattu yanam rice is a traditional variety of rice that is grown in South India particularly in Tamil Nadu. It grows as a tall plant that can hide an elephant. Hence the name Kattuyanam.