Grilled Shrimp with cumin

3 cups canned black beans , rinsed and drained 1/2 teaspoon salt 2 garlic cloves , minced 2 mangoes , peeled, chopped 1 red onion , chopped 1 red bell pepper[...]

2 tablespoons packed dark brown sugar 2 tablespoons fresh lime juice 1 fresh hot red chili pepper , thinly sliced (4-inch long) 1 scallion , halved lengthwise[...]