Asam Prawn (Tamarind Prawn)

Bahan-bahan (4 porsi)

• 10 oz shell-on big prawns
• 2 tablespoons tamarind pulps
• 1/4 cup water (4 tablespoons)
• 1/2 teaspoon salt
• 3 tablespoons cooking oil
• 1/2 tablespoon sugar