They are smoke fired with rice husks in enclosed kilns which gives its unique shiny black surface.

The grooves on clay wares are then filled with silvery powder of Zinc and Mercury, washed with water and polished again.

[3][5][6][7][8] The variety of household and decorative items are made including vases, plates, pots, lamps, tea-pots, bowls, vessels, incense stick holders and statues of Hindu religious figures.

[6] Powdered mix of lead, mercury and zinc in equal proportion is filled into the carved design a technique which was introduced from Gujarat during the Mughal rule of Aurangzeb.

The black clay pottery was applied for Geographical Indication (GI) tag in October 2013 with support of NABARD of Lucknow and Human Welfare Association of Varanasi.