Starch and Flour are polymeric carbohydrate consisting of a large number of glucose units joined by glycosidic bonds. It’s came from many type of the raw material ex. tapioca, corn, potato, wheat, rice until the fruit like banana or pineapple.
But how they made it,
The manufacturing process start with washing and peeling it. Until it clean enough we will mill it in the water. Then we press to put the starch granule out as mush as we can. After that we dry it in to the powder form and pack in the nice packaging. We will get the starch/flour ready for using.
And what is the difference between starch and flour
Nature of every raw material contain protein inside. Flour will have the protein content inside it. But starch it have some process to treat the protein out of it.