Ingredients:
1 pound very red spiny lobster shells
2 pounds butter
orchanet

Preparation:

1. Pound one pound of very red spiny lobster shells with two pounds of butter until they are reduced to a paste; put this into a saucepan till the butter be cooked and clarified, then strain it through a piece of muslin into a bowl.
2. As soon as the butter has thrown off its first heat, begin beating it with a spoon till it gets cold, and if needed to be dyed a deeper red shade, then add to it a little orchanet, melted in a small quantity of butter, or clear vegetal carmine.