Most salt production is relatively uncontroversial. Not so in Western Sahara. Since 1975 the territory has been occupied by Morocco, which plunders its salt and other resources with the complicity of Western governments and corporations.

Last year, Norwegian company Mesta rejected a salt deal ‘because of the violations of human rights in the territory’. But Danish company Dansk Vejsalt continues to buy and sell on Western Saharan salt illegally.