Egg and Spinach Glaze (“Tiger-Skin” Sancai / Hu Pi Ban)

Egg and spinach is a Western collecting term for Chinese porcelain decorated with irregular splashes of green, yellow, cream and aubergine-brown glaze. In Chinese cataloguing, the mottled effect may be described as hu pi ban (虎皮斑), meaning “tiger-skin pattern,” or hu pi sancai (虎皮三彩), “tiger-skin three colours.”

Vase with egg-and-spinach glaze, China, Qing dynasty, Kangxi period (1662–1722), 18th century. The Metropolitan Museum of Art, object 79.2.120.

Appearance and technique

The decoration is recognised by its freely arranged patches of green, yellow and brown or aubergine, separated or softened by areas of cream and white. Colours may overlap or run slightly during firing, creating the lively mottled surface that suggested spinach leaves, pieces of egg and the markings of a tiger’s skin.

The coloured, low-fired glazes were generally applied to biscuit-fired porcelain and fired again at a lower temperature. Depending on the object, pale areas may result from a creamy slip, clear glaze or the light porcelain body showing between the coloured patches. Because the design was applied freely, no two examples have precisely the same distribution of colour.

Although called sancai, meaning “three colours,” the name describes a decorative tradition rather than an exact count of visible colours. A single object can display green, amber-yellow, aubergine-brown and cream or white.

Relationship to Tang sancai

The palette derives from the lead-glazed sancai tradition developed during the Tang dynasty (618–907). Tang potters used flowing green, amber and cream glazes on pottery vessels, architectural objects and especially tomb figures.

During the Qing dynasty, Jingdezhen potters adapted this historic palette to a white porcelain body. The result retained the flowing, variegated character of Tang glazes while producing a brighter contrast against porcelain.

Qing-dynasty production

Egg-and-spinach porcelain is particularly associated with the Kangxi reign (1662–1722), although related objects were also produced during the Yongzheng period and in later revivals. Surviving forms include bowls, cups, dishes, brush washers, water pots, small vases, animals, religious figures and joss-stick holders.

Some Kangxi bowls carry a simple underglaze-blue symbol or shop mark inside double circles on the base. This feature is not universal and should never be treated by itself as proof of age.

A Kangxi cup in the British Museum demonstrates the characteristic free application of green, yellow, brown and white and is catalogued both as “egg and spinach” and “tiger-skin sancai.”

Egg and spinach compared with brinjal wares

Egg-and-spinach decoration belongs to the broader family of Qing biscuit and sancai wares, but it should not automatically be described as a brinjal bowl.

• Egg and spinach: irregular, overlapping patches create an overall mottled surface.
• Brinjal ware: aubergine, green and yellow glazes are commonly organised into incised designs or placed against a continuous coloured ground.
• Other sancai wares: colours may define figures, flowers, animals or architectural details rather than forming random splashes.

These categories overlap, and historical catalogues do not always use the terminology consistently.

Identification and condition

Typical characteristics include softly merging colour patches, visible pooling around recessed areas and an unglazed or partly glazed foot. The low-fired surface is softer than the porcelain body and may show rubbing, scratches, flaking or loss of glaze.

Later examples and reproductions are common. Dating should consider the shape, porcelain body, foot construction, glaze texture, firing marks, wear and provenance rather than relying on colour or a painted mark alone.