The quantity of onion, eschalot, or garlic used for a curry should be regulated by the taste of the persons for whom it is prepared; the very large proportions of them which are acceptable to some eaters, preventing others altogether from partaking of the dish. Slice, and fry gently in a little good butter, from a couple to six large onions (with a bit of garlic, and four or five eschalots, or none of either), when they are coloured equally of a fine yellow-brown, lift them on to a sieve reversed to drain; put them into a clean saucepan, add a pint and a half of good gravy, with a couple of ounces of rasped cocoa-nut, or of any other of the condiments we have already specified, which may require as much stewing as the onions (an apple or two, for instance), and simmer them softly from half to three quarters of an hour, or until the onion is sufficiently tender to be pressed through a strainer. We would recommend that for a delicate curry this should always be done; for a common one it is not necessary; and many persons prefer to have the whole of it left in this last After the gravy has been worked through the strainer, and again boils, add to it from three to four dessertspoonsful of curry-powder, and one of flour, with as much salt as the gravy may require, the whole mixed to a smooth batter with a small cupful of good cream.* Simmer it from fifteen to twenty minutes, and it will be ready for use.
Lobster, prawns, shrimps, maccaroni, hard-boiled eggs, cold calf's head, and various other meats may be heated and served in it with advantage. For all these, and indeed for every kind of curry, acid of some sort should be added. Chili vinegar answers well when no fresh lemon-juice is at hand.
Onions, 2 to 6 (garlic, 1 clove, or eschalots, 4 to 5, or neither); fried a light brown. Gravy, 1 1/2 pint; cocoa-nut, 2 ozs. (3, if very young): 1/2 to 3/4 hour. Curry-powder, 3 to 4 dessertspoonsful; flour, 1 dessert-Bpoonful; salt, as needed; cream, 1 small cupful: 15 to 20 minutes.
In India, curds are frequently added to curries, but that may possibly be from their abounding much more than sweet cream in so hot a climate.