Ingredients:
- 2 tablespoons frozen unsweetened coconut flakes, thawed
- 1 cup powdered sugar
- 1 tablespoon fresh lime juice
- 1/2 teaspoon lime zest, divided
- Dash of salt
- 1 (10-inch) round angel food cake
- 4 large mangoes, peeled and sliced
- 2 tablespoons granulated sugar