Title: Lemon filling (for blitz torte, etc.)
 Categories: Cakes
      Yield: 1 servings
 
    1/4 c  Flour
      1 c  Sugar
    1/4 ts Salt
    1/3 c  Water
      2    Egg Yolks, Beaten
      2 ts Lemon Rind, Grated
      1 ts Butter
    1/4 c  Lemon Juice
 
  Blend flour, sugar and salt in a saucepan; add water, stir until
  smooth. Place over moderate heat, stir constantly until thick and
  clear. (7-8 min.) Beat egg yolks, add a little hot mixture, beat
  thoroughly, return to saucepan, stir vigorously; and cook another 2
  min. Remove from heat. Blend in rind and butter, then lemon juice.
  Cool. From Meta Givens Modern Encyclopedia of Cooking.