Artificial black pigment made of the sediment of white wine mentioned in historic documents of the 17th-19th centuries. Frankfurt black was the preferred pigment for making intaglio printing ink. Production of the pigment centered in the vineyard areas east of Frankfurt, Germany in the villages along the banks of the river Main. For unknown reasons, Frankfurt black disappeared after 1900. It is not to be confused with the mixture of bone black and Berlin blue still used as a painting pigment and known as Frankfurt or Parisian black.
