2 bananas, peeled and thinly sliced
2 cucumbers - peeled, seeded, and diced
1/2 cup fresh mint leaves
1/2 cup fresh cilantro leaves
1 teaspoon finely chopped fresh ginger root
1 fresh red chile pepper, thinly sliced
1/4 cup lime juice
1 tablespoon fish sauce
1 tablespoon brown sugar
1 1/2 pounds tiger prawns, peeled and deveined