Lontong is a special dish in Indonesia made of compressed rice cooked in banana leaves for six hours
Other definition:
Lontong refers to "Compressed Rice" in Indonesia, but also it is considered as an Asian dish which is popular not only in Indonesia, but also in Malaysia. It is usually served cold or at room temperature with sauce-based dishes such as Gado-gado, Soto Ayam, salads, and also it can be eaten as an accompaniment to other dishes such as curries.

Lontong is traditionally made by partly cooking the rice and packing it tightly into a rolled-up Banana leaves. The leaf is then secured and cooked in boiling water for about 2 hours or more. Once it is cooled, the rice compacts and can be cut up into bite-sized pieces. If banana leaf is not availabe, aluminum foild can be a good substitute to make Lontong.

In Indonesia, it is already available in some traditional markets for a cheap price.
List of books: Lontong