Citrus Jicama

1 jicama, peeled and diced
2 oranges, segmented
2 grapefruits, segmented
1/2 cup thinly sliced red onion
1/2 cup chopped cilantro 

Juice & zest of 2 limes
1 jalapeno, minced (optional)
Chili powder, to taste
Salt, to taste 

In a large bowl toss together jicama, segmented fruits, red onion and cilantro. Squeeze in lime juice. Sprinkle with chili powder and salt to taste.