Salt is a play by Fiona Peek.

"Though Amy and Simon have the money and children that life has so far denied Nick and Rachel, a friendship forged years ago has remained constant. When they find the cash to enable their friends to hold onto their dreams, a simple act of charity brings everything bubbling to the surface. As they join together for different courses of different meals over nine months, and the heat continues to rise, they soon find themselves approaching boiling point."