Cream together in a mixer, cream cheese, 3/4 cup sugar, salt, lemon extract and vanilla flavoring (add lemon juice last).
Make sure all ingredients are completely mixed;set aside. In a Separate mixing bowl, lightly beat eggs, 1 1/2 cup lemon curd, 1 cup of the sour cream, and 1 cup half & half.
Turn mixer on low and slowly add to creamed mixture. Gradually increase speed to medium.
Mix in sifted flour one tablespoon at a time until fully incorporated.