Fennel Sauce for Mackarel.
Pick green fennel, mint, and parsley, a little of each; wash, boil them till tender, drain and press them, chop them fine, add melted butter, and serve up the sauce immediately, for should the herbs[269] be mixed with the butter any length of time before it is served up, they will be discoloured. The same observation should be noticed in making parsley and butter sauce.