During the Meiji period, hoiro with iron framework appeared and a technique to dry the leaves on hoiro by kneading them was advanced and various schools were generated.
明治になり、鉄の骨組みを持つほいろが登場し、ほいろの上で揉み乾かす手揉みの技法が発達して、様々な流派が生まれていった。