Consommé

Incooking, aconsomméis a type of clearsoupmade from richly flavouredstockorbroththat has been clarified, a process that usesegg whitesto remove fat and sediment.
Consommé has three English pronunciations: traditionally in the UK, the stress is on the middle syllable;in modern UK English, the stress is on the first; and in the US the stress is on the last.
A large amount of meat only yields a small amount of consommé; in some recipes, as much as 500 grams (1 lb 2 oz) of meat can go into a single250-millilitre (9 imp fl oz;8+1⁄2US fl oz) serving. This low yield is part of what has traditionally given consommé its refined reputation as an expensive dish.
Clarified broths called consommés have been in use since theMiddle Ages, taking many forms from simple soups, to soups made from the meat of a wide variety of less-common animals. The clarification process also historically utilised blood rather than egg whites.
A special type of consommé that was boiled solely withtendonsandcartilagewithout the addition of salt was sweetened, flavoured with fruits and served as dessert. These sweetened consommé creations are essentially the forerunners of present-daygelatindesserts.
A consommé is made by adding a mixture of ground meats, together withmirepoix(a combination of carrots, celery, and onion), tomatoes, and egg whites into eitherbouillonorstock.
Cartilage and tendons should be left on the meat because of thegelatinthey contain, which enhances themouthfeelof the soup. If beef or veal is used,shinmeat is idealbecause it is very low in fat and very high in gristle, and although it is undesirable for most other purposes, it is near essential for the flavour of the consommé. The meat is best if it is ground very fine, as if for amousseline.
The key to making a high-quality consommé issimmering; the act of simmering, combined with frequent stirring, brings impurities to the surface of the liquid, which are further drawn out due to the presence of acid from the tomatoes. Eventually, the solids begin to congeal at the surface of the liquid, forming a 'raft', which is caused by the proteins in the egg whites. Once the 'raft' begins to form, the heat is reduced, and the consommé is simmered at a lower heat until it reaches the desired flavour, which usually takes anywhere from 45 minutes to over an hour. The resulting concoction is a clear liquid that has either a rich amber colour (for beef or veal consommé) or a very pale yellow colour (for poultry consommé).
The liquid is then carefully drawn from the pot and passed again through a filter to ensure its purity, and is then put through a lengthy process where all of the visible fat is skimmed from the surface. To ensure total purification, the consommé can be refrigerated, which draws out remaining fat, which can easily be skimmed off with acheesecloth. Alternatively, the consommé can be placed in a wide, shallow container such as a sauté pan or large bowl and wide strips ofparchment papercan be dragged along the surface; the tiny amounts of remaining fat adhere to the parchment, leaving the consommé perfectly de-greased.
Consommés are usually served piping hot because they tend to cool down more quickly than other soups and form agel. They are most often served with garnishes, which vary in complexity from a simple splash ofsherryor egg yolk, to cut vegetables, to shaped savoury custards called 'royales'.
Some types of consommé such as tomato are traditionally served chilled, which keeps their clearness.
Double consommé is made to double strength. There are at least three methods of producing one, the first of which is doubling the quantity of meat used in the recipe, the second of which is producing one of normal strength andreducingit to half its volume,and the third of which is producing one with all water in the recipe replaced with equal quantities of an already-prepared consommé.It is often found in other cold-cuisine items, especially those that useaspic, or natural gelatin.
Another common variation is chilled or jellied consommé.  They are served cold and thickened naturally by the gelatin extracted from the bones when the original stock is made.  The gelatin gives them a gelatinous texture when set to cool.  Additional gelatin may be added during the last part of the clarification process to ensure that it sets properly.
Consommé madrilèneis a clear soup that is pure and clean-tasting, typically flavored with tomato, and served chilled.
In a 2007New York Timesarticle,Harold McGeepopularized an alternative method for clarifying broths, originating among chefs of themolecular gastronomymovement:gelatinfiltration. Gelatin-filtration is a novel method of clarification, relying on some of the properties of a super-saturatedsolution of gelatin, created byfreezing, to remove macroscopic particles that cause cloudiness from a water-basedstock. This method is distinct from traditional consommé both in technique and in final product, as gelatin filtration results in a gelatin-free broth, while traditional consommé gives a final product rich in gelatin, with a correspondingly richmouthfeel.  Also traditional consommégelswhen chilled, while a gelatin-filtered consommé does not.
Freezing a water-based solution converts all bulk water into ice crystals, but water associated withsolutes—in the case of a soup stock, gelatin, fat, and flavor compounds—remains unfrozen to much lower temperatures; in practice, the freezing temperature of this associated water is well below the reach of conventional freezers. Thus, gelatin filtration works by freezing a gelatin-containing, water-based solution and then allowing it to thaw in a mesh strainer at just above the freezing temperature of water. The gelatin and other solutes concentrate in the unfrozen, associated water, and the gelatin forms a stable network through cross-linking, just as it would in a standard gel. This stable network acts as a filter, trapping large particles of fat or protein, while allowing water and smaller, flavor-active compounds to pass. As the bulk water melts, it passes first through the gelatin network and then through the mesh strainer, into a receiving vessel. Because the temperature is kept just above the freezing point, the bulk water melts slowly and, as it is strained into a separate vessel, it is never in contact with the gelatin for long enough to begin dissolving the gelatin network. After all of the bulk water melts, the gelatin network remains in the strainer with the trapped macroscopic particles, and the clarified stock (the bulk water and flavor compounds) is collected in the receiving vessel.
Because gelatin-filtered consommés do not require a creation of an egg-white raft as in traditional consommés, they are less wasteful. The technique is also applicable to a wider range of "stocks": since no heating is required, heat-sensitive materials, such as fruit juices, can be clarified by first adding a small amount of gelatin, then applying gelatin filtration. A number of non-traditional consommés, not based on stock, have been created using this method, including "pretzel", "Doritos, "brown butter", and "spiced pumpkin".