A range of salts said to have been collected from human tears has gone on sale in London.Hoxton Street Monster Supplies says the salts come from crying humans experiencing a range of emotions.The £7 range includes salts harvested from tears of sorrow, tears shed while sneezing, tears shed while chopping onions, tears of laughter, and tears of anger.A spokesman for the company said that each salt had a distinctly different flavour."Salt Made From Tears combines centuries-old craft with the freshest human tears which are gently boiled, released into shallow crystallisation tanks, then harvested by hand and finally rinsed in brine," he said.