From 1915:
In choosing a recipe I tried to think of something that would be used any time of the year without regard to seasons. Looking over my little book of dainty dishes I found this one for citron pudding which seems to me just the thing.
The ingredients for citron pudding are usually those that would be found in a well-stocked grocery closet of any kitchen at any time. They are:
Four oz. butter, 3 oz. powdered loaf sugar, 1 egg, candied peel and pastry.
Soften the butter to a thin cream. Beat the egg, add the sugar and then the butter. Mix well together.
Line a shallow pie dish with nice pastry. Put in- the bottom a rather thick layer of citron peel sliced, or citron and lemon mixed. Then pour the mixture over it and bake till the crust is done. This is to be served cold.