barbotine

Barbotine is a technique of decorating pottery that involves the application of liquid slip to the pot, not in an even layer but in the form of thick incrustations in patches or trails.

The technique was used by Rhenish potteries, particularly in and around the city of Trier, from about 300 AD.

The word was also applied in the 1870s to the technique of painting in coloured slips developed by Ernest Chaplet working at the Haviland studios at Auteuil.

The same technique was also taken up in the USA, at the Rookwood pottery and elsewhere.

Images:

Rhenish barbotine jug