Lemon sour cream pie. #pie #summerdessert #summerfood #lemon Ingredients 1 fully cooked pie shell 4 tablespoons cornstarch 1 cup sugar 1 cup milk 1/2 cup lemon juice 2 tablespoons lemon zest 3 egg yolks 4 tablespoons salted butter 1 teaspoon lemon/vanilla extract 1 cup sour cream Directions Place cornstarch, sugar, milk, lemon juice and extract and egg yolks in a small pot. Whisk. Place over medium high heat, continually stirring until it reaches a boil and becomes thick. Remove from heat and st