When it boils, add the white rice, Simmer for 15 minutes, only until rice is just tender.
While this is cooking, whip 2 eggs with the 1/2 cup of lemon juice.
When the rice is cooked turn off the heat. Gradually add 2 or 3 cups of the hot soup to the eggs while stirring with the whisk- then add the egg mixture to the soup in the pot. Do not cook after adding the eggs.
Add one cup of cold water. This keeps the rice from continuing to cook.