The Book of Household Management by Mrs. Beeton

222. IN GARNISHING FISH, great attention is required, and plenty of

parsley, horseradish, and lemon should be used. If fried parsley be used, it must be washed and picked, and thrown into fresh water. When the lard or dripping boils, throw the parsley into it immediately from the water, and instantly it will be green and crisp, and must be taken up with a slice. When well done, and with very good sauce, fish is more appreciated than almost any other dish. The liver and roe, in some instances, should be placed on the dish, in order that they may be distributed in the course of serving; but to each recipe will be appended the proper mode of serving and garnishing.