Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
 100      grams         flour
  50      grams         sugar
   5      milliliter    lemon rind
   1 1/2  milliliter    vanilla
   1                    egg yolk
  50      grams         softened butter
   1      kilograms     cream cheese
 300      grams         sugar
  20      grams         flour
   7      milliliter    orange rind
   7      milliliter    lemon rind
   1 1/2  milliliter    vanilla
   5                    eggs
   2                    egg yolks
  50      milliliter    cream

Preparation:

1. Mix crust ingredients; press into a baking pan. Bake 10 minutes at 200 øC . 2. Combine filling ingredients; mix well, and pour into baked crust. 3. Bake at 225 øC for 10-12 minutes. 4. Reduce to 100 øC for 1 hour. Difficulty : easy to moderate. Precision : measure the ingredients.