Sufficient of this brown thickening must be added to the curry sauce, which is supposed to have been rubbed through the wire-sieve, to make it as thick as gruel; and, as we have said, this thickening only takes place when it is boiled, and at the same time stirred, over the fire. The curry is now complete, and has only to be poured round, not over, the freshly-cooked sweetbreads.
Suppose, however, the dish required was curried mutton, which is, of course, a much more economical dish than curried sweetbreads, and it is undoubtedly one of the best methods of using up a cold joint. Cut some slices of meat off the cold joint; avoid skin and gristle, and choose those slices as much as possible containing most fat. Then boil up the curry sauce, ready thickened and finished, in a stew-pan, remove the stew-pan from the fire, and place the slices of meat in it, and cover them with the sauce; replace the stew-pan on the hob, but not on the fire, leave it in a warm place for half an hour, and just before turning it out make it a little hotter, if you like, by carefully holding the stew-pan over the fire; but recollect if it once boils or bubbles up the meat will get hard, and the curry will be spoilt.
The proper accompaniment to curry is boiled rice; this ought properly to be served in a separate dish. The rice must be boiled till quite tender, and then the grains should be separated from one another by being tossed lightly about on a cloth in front of the fire.
Curry is, as we have said, the most suitable dish for hot weather, as is abundantly proved by its being the most popular in India. In India fresh tamarinds and mangoes are, I believe, used instead of apples; various herbs and spices are also used, which differ in different parts of the country.
Many persons, especially old Indians, have recipes for curry. We have given what must necessarily form the basis of curry, where the curry-powder or paste is not home-made. By many, the addition of a little grated cocoa-nut to the curry is considered a great improvement; or where cocoa-nut cannot be obtained, a few grated Brazil nuts may be used instead. Others, too, strongly recommend the addition of powdered coriander-seeds. Coriander-seeds are, however, used in making curry-powder, and good curry-powder ought to contain sufficient. When, therefore, the powder is old, and has lost that aromatic smell which it ought to have, a little powdered coriander-seed may be added with advantage; but it has a very decided flavour, and must be used with caution.