Asian Honey-Tea Grilled Prawns

In plastic bag, combine marinade ingredients (everything but the shrimp, salt and onions). Remove 1/2 cup marinade; set aside for dipping sauce. Add shrimp to marinade in bag, turning to coat. Close bag securely and marinate in refrigerator 30 minutes or up to 12 hours. Remove shrimp from marinade; discard marinade. Thread shrimp onto eight skewers, dividing evenly. Grill over medium coals four to six minutes or until shrimp turn pink and are just firm to the touch, turning once. Season with salt, as desired. Meanwhile, prepare dipping sauce by placing reserved 1/2 cup marinade in small saucepan. Bring to a boil over medium-high heat. Boil three to five minutes or until slightly reduced. Stir in green onions.