Lobster Sauce. No. 1. (Cataldi.)
(See Appendix regarding the boiling of Lobsters.)
A hen lobster is best (cock lobsters being too large and strong in flavour). Buy a live one. Blanch it, split it in two, running your knife from head to tail down the back. Take out all its meat. Separate the coral from the meat; and cut the meat into small dice. Put them aside on a plate till wanted. Pass the coral through a small hair sieve, then put it also aside on a separate plate.
Crack the lobster's shell in a mortar, put it into a stewpan with a little thyme, bay-leaf and parsley, and a little sliced onion. Put the stewpan on a gentle fire, and cover it close.
When the liquor is fully drawn, add as much water as is required, and let it boil for about 20 minutes, then pass it through a sieve. Make melted butter with this liquor instead of water, and proceed otherwise as usual in making it. Season sauce when made with a little salt, white pepper, and cayenne. Take some live spawn and mash it through a sieve, then add it to the sauce.
Now add the coral and mix it well in. Dice of lobster meat must be added the last thing, with a small teaspoonful of essence of shrimps and 1 tablespoonful of cream, merely in time to be well warmed through.