Ubi kayu with sambal

I found Ubi kayu (yam) & sambal sold at a kopitiam-like cafe in Bangsar. My mother usually calls it ubi & sambal. When my mother was younger and living in a village in Johore, she said that, this "dish" is common for breakfast.

The yam is boiled and to it a pinch of salt is added, while the sambal is just like nasi lemak sambal (i.e. sambal ikan bilis).

Simple, cheap yet very scrumptuous!