A small proportion of sugar, about an ounce to the gallon, will very much improve the flavour of gravy-stock, and of all rich brown soups; it may be added also to some others with advantage; and for this, directions will be given in the proper places.
Two ounces of salt may be allowed for each gallon of soup or broth, in which large quantities of vegetables are stewed; but an ounce and a half will be sufficient for such as contain few or none; it is always easy to add more if needful, but oversalting in the first instance is a fault for which there is no remedy but that of increasing the proportions of all the other ingredients, and stewing the whole afresh, which occasions needless trouble and expense, even when time will admit of its being done.
As no particle of fat should be seen floating on soup when sent to table, it is desirable that the stock should be made the day before it is wanted, that it may become quite cold; when the fat may be entirely cleared off without difficulty.
When cayenne pepper is not mixed with rice-flour, or with any other thickening, grind it down with the back of a spoon, and stir a little liquid to it before it is thrown into the stewpan, as it is apt to remain in lumps, and to occasion great irritation of the throat when swallowed so.
Serve, not only soups and sauces, but all other dishes, as hot as possible.
THE TIME REQUIRED FOR BOILING DOWN SOUP OR STOCK.
This must be regulated by several considerations; for though the mere juices of meat require but little boiling after they have been fully extracted by the slow heating recommended by Baron Liebeg, soup to which many vegetables are added (winter vegetables especially) requires long stewing to soften and to blend properly the flavour of all the ingredients which it contains, as that of no one in particular ought to be allowed to predominate over the rest. We have in consequence retained the old directions as to time, in many of the following receipts; but an intelligent cook will soon ascertain from practice and observation how and when to vary it with advantage. Over-boiling renders all preparations insipid, and causes undue reduction of them likewise: it is a fault, therefore, which should be carefully avoided.
TO THICKEN SOUPS.
Except for white soups, to which arrow-root is, we think, more appropriate, we prefer, to all other ingredients generally used for this purpose, the finest and freshest rice-flour, which, after being passed through a lawn sieve, should be thoroughly blended with the salt, pounded spices, catsup, or wine, required to finish the flavouring of the soup. Sufficient liquid should be added to it very gradually to render it of the consistence of batter, and it should also be perfectly smooth; to keep it so, it should be moistened sparingly at first, and beaten with the back of a spoon until every lump has disappeared. The soup should boil quickly when the thickening is stirred into it, and be simmered for ten minutes afterwards. From an ounce and a half to two ounces of rice-flour will thicken sufficiently a quart of soup.
Instead of this, arrow-root or the condiment known by the name of tous les mois, which greatly resembles it, or potato flour, or the French thickening called roux (see Chapter [V].), may be used in the following proportions:—Two and a half ounces of either of the first three, to four pints and a half of soup; to be mixed gradually with a little cold stock or water, stirred into the boiling soup, and simmered for a minute.