In the Cheshire town of Northwich, not far from where the brine comes out of the ground, you will find another part of this salt diaspora, an old ICI site run these days by Tata Chemicals, which also owns British Salt. That the Cheshire salt which once provided Gandhi with the cause for his iconic satyagraha is now being produced by an Indian company is one of those ironies little appreciated outside the Material World.

