Wash and peel prawns, by removing the heads and legs. (Do not throw out the heads)
In a large sauce pan add in the olive oil and the onion.
Continue by adding in the heads of the shrimps, along with the tomatoes, tomato paste, wine, parsley, sugar, garlic, salt & pepper. (Hold off on adding in the prawns and the orzo just yeand lastly add in the 4 cups of water. Cook until water has not been completely absorbed.
Take out the prawn heads and add in the Orzo. Stir until Orzo has been cooked.
In a small sauce pan sauté the Prawns in a bit of olive oil, once prawns are ready add them into the Orzo mix.