stiff consistency; thick paste
Describes a substance that has been kneaded or mixed to a firm, thick state, such as dough, paste, or clay.
パン生地を固練りにする。
Knead the bread dough to a stiff consistency.
この粘土は固練りで
This clay is a stiff paste and easy to shape.
stiff-consistency concrete
Compound of 固 (kata, 'hard, firm') and 練り (neri, 'kneading'), from the verb 練る (neru, 'to knead').