Rice glue (Japanese: 続飯, sokui) is a gel or liquid adhesive made of a smooth mush of well-cooked white rice, diluted to the desired thickness with water.^[1][2] It has been used since antiquity for various arts and crafts; for instance, it is a woodworking^[1] and paper glue.^[2] When dried, it is transparent.^[2] Rice glue is notable for containing no acids which can degrade the materials it holds together.

It is still used in modern times to reversibly assemble joints; after it has dried, the glue can be soaked,^[1] steamed, or split to re-open the joint;^[1] on a small wood joint, the glue is resistant to tens of minutes of water immersion.^[3]

It is sometimes mixed 1:1 with urushi lacquer to make nori-urushi (Japanese term), which is darker and dries faster than undiluted lacquer, and is used in making lacquerware.^[1]

Rice glue is frequently used in Japan and in China.