Traditionally cooked and eaten in various forms specially cooked with boiling water in the form of cookies. The sago pearls as you can boil water or milk to make a cake (pudding) sweet sago. Sago pearls outwardly resemble pearl tapioca and both can be used as so alternative.
Sago is high in calories because it is basically made of starch. The starches are complex carbs that contain multiple connected glucose molecules, which are used by the body to produce energy. This food product is not very nutritious but is carb-dense. It contains a small amount of protein and vitamins.