Various, The Girl's Own Paper, Vol. VIII, No… (1880)
“ White mushroom sauce, which is so delicious with boiled fowl, can be made by adding a tin of mushrooms to some good béchamel sauce. Béchamel sauce is some very strong stock, mixed with some boiling milk, or, still better, boiling cream, thickened with a little butter and flour. When the tin of mushrooms is added to the white sauce, the whole should be rubbed through a wire sieve with a wooden spoon. ”
