Scale and clean the fish, handling it as little as possible, and cutting it open no more than is absolutely necesesry. Place it on the strainer of a large fish-kettle and fill it up with cold water. Throw in a handful of salt. Let it boil slowly. The length of time depends on the size and weight of the fish. You may allow a quarter of an hour to each pound; but experience alone can determine the exact time. It must however be thoroughly done, as nothing is more disgusting than fish that is under-cooked. You may try it with a fork. Skim it well or the colour will be bad.
The minute it is completely boiled, lift up the strainer and rest it across the top of the kettle, that the fish may drain, and then, if you cannot send it to table immediately, cover it with a soft napkin or flannel several folds double, to keep it firm by absorbing the moisture.
Take what is left of it after dinner, and put it into a deep dish with a close cover. Having saved some of the water in which the fish was boiled, take a quart of it, and season it with half an ounce of whole pepper, and half an ounce of whole cloves, half a pint of the best vinegar, and a tea-spoonful of salt. Boil it; and when cold, pour it over the fish, and cover it closely again. In a cold place, and set on ice, it will keep a day or two, and may be eaten at breakfast or supper.
If much of the salmon has been left, you must proportion a larger quantity of the pickle.
Boil salmon trout in a similar manner.