I love cooking with the liturgical year and all

But I am not making today's recommended dish for St Louis, King of France.

Directions
Cut the eel in rounds. Mix with it yolks of eggs, parsley, mushrooms, asparagus, soft roes, verjuice, or gooseberries if in season, and do not stint either butter, or salt, or pepper. Spread this on an undercrust and cover it with pastry. In order to hold it together, butter narrow bands of paper, and putting them around the pastry, bind them lightly on. Bake the pâté and, when it is cooked, mix the yolks of three eggs with a dash of verjuice and a little nutmeg; and when you are ready to serve, pour in your sauce into the pâté and mix it well. Open the pâté and serve with the crust cut in four.

Margaret Mary suggests French toast instead...

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