Sattu is made of roasting Bengal gram or chana ki dal.
With the help of a Filter, roasted Bengal gram is beaten to a powder until it becomes flour.
After this explanation, people always think this powder will be very hard for our body because of the content that is added to it.
This is a drink that is used as a coolant for our body inspite of the ingredients added to it.
You can read the full information regarding Chhatua Sattu.