FISH.
Fish shortly before they spawn are, in general, best in condition. When the spawning is just over, they are out of season, and unfit for human food.
When fish is out of season, it has a transparent, bluish tinge, however much it may be boiled; whenever it is in season, its muscles are firm, and boil white and curdy.
As food for invalids, white fish, such as the ling, cod, haddock, coal-fish, and whiting, are the best; flat fish, as soles, skate, turbot, and flounders, are also good.
Salmon, mackerel, herrings, and trout soon spoil or decompose after they are killed; therefore, to be in perfection, they should be prepared for the table on the day they are caught. With flat fish, this is not of such consequence, as they will keep longer. The turbot, for example, is improved by being kept for a few hours.