Instructions

1. 1
   Place the butter in a mixing bowl; let stand until soft; stir in the flour; stir in the lemon juice and rind; add the sugar gradually so as to make a thorough mixture.
2. 2
   Beat the egg yolks until light; add the milk; stir this into the first mixture; beat the egg whites until stiff but not dry; fold the mixture into the beaten egg whites.
3. 3
   Pour into a buttered baking dish; (my memory of this baking dish is a stainless steel mixing bowl) place the dish in a pan (pyrex baking dish) of hot water and bake in a moderate oven (375) for 35 to 40 minutes.
4. 4
   The center should be firm to touch when pressed with the forefinger.
5. 5
   Serve from the dish, pouring the sauce that has formed at the bottom over the soufflé-like top.
6. 6
   *my grandmother usually doubled this recipe