Recipe 406
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Ingredients
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6 tablespoonfuls of Béchamel, No. 367, seasoning to taste of salt and cayenne, a little parsley-green to colour, the juice of 1/2 a lemon.

Method
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Put the Béchamel into a saucepan with the seasoning, and bring it to a boil. Make a green colouring by pounding some parsley in a mortar, and squeezing all the juice from it. Let this just simmer, when add it to the sauce. A moment before serving, put in the lemon-juice, but not before; for otherwise the sauce would turn yellow, and its appearance be thus spoiled.

Source: Mrs Beeton's Book of Household Management (1861)
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