II. Vessels of earthenware in preference to those of metal, as a less degree of heat keeps them boiling; and once heated, a few hot cinders will maintain that slight degree of ebullition which is wanted.
III. Double the weight of water to that of the meat used.
IV. A sufficient quantity of common salt to facilitate the separation of the blood and slime that coagulates under the form of scum.
V. In the early stage of the process, such a degree of heat as will throw off the whole scum.
VI. A lower, but an equable temperature, that the soup may simmer gently till the substances employed, whether nutritive, colouring, or flavouring, are perfectly combined with the water, according to their several degrees of solubility.
Great care should be taken to have all the utensils clean. Pots, saucepans, and stewpans, should be well tinned, especially for soups and gravies, as they are obliged to remain a long time upon the fire. Whatever is boiled in a brass or copper pot, should be taken out while it is hot; if left to cool, it would have a disagreeable taste, and be very unwholesome. As a convincing proof of this, if the liquor that any kind of meat is boiled in remains in the pot till the next day, the fat at the top will be quite green, and the liquor of course very pernicious. Iron pots, saucepans, &c., are the most wholesome, but they spoil the colour of many articles of cookery, and therefore are not much used; but they are useful for anything that would not be discoloured. Pots lined with earthenware are certainly preferable to any other kind, but they are very expensive.
The broth to be used for soups and gravies should be kept separate; because the broth of the stock-pot, being required for white as well as brown sauces, should not be coloured; whilst that for soups, unless they be white soups, should always be made brown. If, however, you have more coloured broth than you require for soup, you may apply it to making brown gravies.
An excellent stock-pot may be produced with all the bones you can collect, carcasses, and the under or claw-legs of poultry or game—all bones and parings, in short, of flesh and fowl. Put them into a large pipkin with water; or if you have the liquor in which beef, or mutton, or veal, has been boiled, use it in preference. To this you may add, if you have it, a few ladlefuls of the water in which a ham has been boiled, first skimming off the fat. With the bones, put a bunch of leeks, a bunch of green celery, an onion with three cloves stuck into it, a couple of carrots, a turnip, a bit of parsnip, some salt, a bunch of herbs, and two or three sheep’s melts. A small quantity of sugar will also greatly improve the flavour of stock, and indeed of all rich soups. Let the whole stew simmer very slowly during seven or eight hours, keeping it closely covered all the while. Season it with a little salt. When reduced to a good consommée, and you are satisfied with its flavour, strain it through a sieve, and put it by for use.
This broth, if required, may be used for making white soups.
All soups should be closely covered during their boiling, by which the heat will be very much economised. There may be, however, occasionally some deviations from this course, which must depend upon the discretion of the cook. In making soups and broths, stale as well as fat meat should be avoided; the first will impart an ill taste, and the last will be attended with considerable waste.