"Horrid recipe. Quantities are not clear. Use four large lemons??? My lemons were "large" and very juicy -- almost two cups of juice. So the mixture would not thicken. The worst part however, was the taste. We probably should have known not to use a metal saucepan to cook the mixture but we did and the mixture -- if it ever would have thickened, tasted very bad and metallic. We through it out -- wasted a pie crust, four lemons and three eggs. Don't try this recipe.