In another bowl, mix the egg yolks and lemon juice together until combined. When the orzo or rice is cooked ... Keep the heat very low. The soup will thicken as the egg cooks.
This vibrant soup ... the orzo is fully cooked and the greens have wilted. Turn the heat right down, then pour in the cream and stir well. Simmer gently for 2 minutes then stir in the lemon ...