
A 4.5cm frog for the writing desk: a water dropper for ink
Its round eyes and tiny mouth suggest a toy, but this white frog was a writing tool. The National Museum of Korea’s frog-shaped porcelain water dropper held water for grinding an inkstick on an inkstone.
A 4.5cm porcelain piece
Made of white porcelain in the Joseon period, the dropper is 4.5cm high and 3.5cm in diameter. Its collection number is Sujeong 356. The desk accessory, smaller than a palm, carries an animal’s expression.
Two openings control the flow
A water dropper does more than store water. The Encyclopedia of Korean Culture explains that two openings regulate the air flow so the user can release as much water as needed, whether for grinding ink or mixing paint.

Red spots
Small reddish spots dot the white body. The Korean term donghwa refers here to decoration in copper-red pigment.
Viewed from above, the folded hind legs stand out; from the front, the mouth and eyes read as a face.
Many shapes
Joseon water droppers came in round and angular forms as well as shapes modelled on animals, plants and houses. In the group photograph, droppers with different outlines surround the white frog. Each was both a practical tool and a small sculpture on the writing desk.
Sources & context
2026-10-14T10:06:14.602Z
National Museum of Korea · Frog-shaped white-porcelain water dropper, Sujeong 356 ↗Academy of Korean Studies · Encyclopedia entry on water droppers ↗Photo credit
국립중앙박물관 / National Museum of Korea · KOGL Type 1Group photograph of differently shaped water droppers published on the museum’s Sujeong 356 collection page. The white frog just right of centre in the front row is the object discussed here. Capture date unspecified. National Museum of Korea, KOGL Type 1; original unchanged. https://www.museum.go.kr/MUSEUM/contents/M0502000000.do?relicId=8637&schM=view&searchId=search
Photo credit
국립중앙박물관 / National Museum of Korea · KOGL Type 1A view of Sujeong 356 from above shows reddish spots and the folded hind-leg shape. National Museum of Korea, KOGL Type 1. Capture date unspecified; original unchanged. https://www.museum.go.kr/MUSEUM/contents/M0502000000.do?relicId=8637&schM=view&searchId=search
