Cucumber, Mango and Red Onion Salad

From Alice Waters’ Chez Panisse Vegetables

1 medium cucumber, peeled if desired, sliced thin
1 – 2 mangos, peeled, sliced thin
1 small red onion, peeled, sliced thin
juice from 1-2 limes
sea salt 

Gently toss the cucumbers, mango slices, and red onion with lime juice and salt. Serve with spicy Mexican food.