Report Abuse. Almost every bone in your body is made of the same materials: The outer surface of bone is called the periosteum (say: pare-ee-os-tee-um). It's a thin, dense membrane that contains nerves and blood vessels that nourish the bone. The next layer is made up of compact bone.This part is smooth and very hard.eport Abuse. Almost every bone in your body is made of the same materials: The outer surface of bone is called the periosteum (say: pare-ee-os-tee-um). It's a thin, dense membrane that contains nerves and blood vessels that nourish the bone. The next layer is made up of compact bone. This part is smooth and very hard.
Bread flour is high in gluten protein, with 12.5-14% protein compared to 10-12% protein in all-purpose flour. The increased protein binds to the flour to entrap carbon dioxide released by the yeast fermentation process, resulting in a stronger rise. Bread flour may be made with a hard spring wheat.
Confidence votes 7.8K. High grade flour or strong flour has a higher content of gluten (a protein formed when flour is moistened) so is mor4e suitable for baking items that require this strength such as bread and dense cakes such as dried fruit cakes.