It was made from the pith (inner marrow) of the Cyperus papyrus plant, which grew abundantly in the Nile Delta.
In the context of the (c. 2686–2181 BCE), "paper" refers to papyrus , the world's first writing material . While true paper was later invented in China, the Egyptians pioneered the use of the papyrus plant to create a durable, flexible surface for record-keeping and literature. The Invention of Papyrus Egypt: Old Kingdom
Egyptians sliced the pith into thin strips, layered them in a crosshatch pattern (horizontal and vertical), and pressed them together. The plant's natural sap acted as an adhesive to bond the layers into a single sheet. It was made from the pith (inner marrow)