Toss together the cucumber, onion, garlic, ginger, and salt in a colander and set it in your sink to drain for about 15 minutes (the salt will pull excess moisture out of the veggies).
Meanwhile, in a large bowl, combine the mango, tomatoes, chile, cumin, cinnamon, ½ cup peanuts, cilantro to taste (I use about ⅓ cup chopped), the lime juice, and the oil. Toss gently to combine.
Add the drained cucumber/onion mixture and gently toss to combine once more. Taste and adjust anything to your liking (more salt, some fresh pepper, a little more cilantro, peanuts, etc.). I like to transfer the salad to a platter and top with extra peanuts, cilantro, and cut limes for squeezing over.
