Salt-making techniques using pottery in Japan

Resum 

La sal s’ha produït al Japó a partir d’aigua de mar des del període prehistòric. Com que la salinitat de l’aigua de mar és del 3 al 3,5%, es creu que existia una tecnologia destinada a augmentar-ne la salinitat per tal d’escurçar el procés d’ebullició. A més, s’han observat desenvolupaments en les tècniques de bullir, com ara la construcció de fogars enllosats amb pedra. La ceràmica utilitzada per fer sal també va canviar de forma amb el temps. Aquest article se centra en els canvis en les tècniques de producció de sal amb ceràmica al Japó.

Abstract

Salt has been produced in Japan from seawater since the prehistoric period. As seawater's salinity is 3 to 3.5%, it is believed that technology existed to increase the salinity to shorten the boiling process. In addition, the development of boiling techniques has been observed, such as the construction of stone-paved hearths. Salt-making pottery also changed its shape over time. This paper will focus on changes in the salt production techniques by pottery in Japan.

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