The Placitum of Risano relative to the discussion by delegates
of Karl the Great at Risano/Rižana about the Pag salt-pans. At
that time, there were several small salt-pans in Piran owned by
monasteries. The towns of the eastern Adriatic sign an agreement
on compulsory sale of salt to the Venetian Republic, which
during its struggle for the economic supremacy in the
Mediterranean destroyed salt-pans in the west, while in Istria
and in the Northern Adriatic it gradually enabled the
municipalities, in order to retain its influence, even a partial
independence in the production of salt. In order to increase the
economic effect of salt-making, the salt-making procedure was
modernised in Piran following the Pag salt-pans example. The
latter yielded white salt made on gypsum substratum, with
microbiological elements, which constituted the so-called
petola. During the new wave of salt-pan destruction in the
Mediterranean, with which the Venetians once again wished to
strengthen their power, the Piran salt-pans remain