A soup is a flavorful and nutritious liquid food served at the beginning of a meal or a snack. Traditionally in France, soupé was a slice of bread on which the contents of a cooking pot (potage) was poured. Soup was designated as unstrained vegetable meat or fish soups garnished with bread, pasta, or rice.
However, it is the good stock which gives the body or strength to the soup. After an appetizer, soup is the first meal in real sense. It is important to take utmost care in its preparation, as it will create the first impression on the mind of the guest. Soups have many forms—some soups are thin and served as broths, while some are served as clear soups such as consommé.
Certain soups are thick and creamy and they could be just pureed or thickened with flour and milk, for example, cream soups. Certain shellfish soups are thickened with rice and pureed such as bisques and so on. It is very important to focus on the texture of a particular soup, as textures are peculiar to many soups.
A clear soup will be served crystal clear and the thick creamy soups should have a smooth velvety finish. Characteristic of one soup might differ from another, but few most important points are to be kept in mind while preparing soups. Each soup should reflect its own identity.
The flavour of the main ingredient used should remain prominent. Consommé should be clear and not cloudy, and broth should contain even cuts of meats and vegetables, so that it is pleasing to an eyes. The presentation of a soup is also very important as we know that this would create the first impression on guests.
Soups are broadly classified into two types—thick soups and thin soups, which are further classified into various categories. This is done based on the texture of the soups. However, neither there are certain soups that are neither thin nor thick and so sometimes certain soups are also classified into a category called ‘international soups’.
A broth is a stock-based soup, which is not thickened. It is served unpassed and garnished with chopped herbs, vegetables, or meats. For example, minestrone, scotch broth, etc. Clear soups are thin like liquid; they never coat the back of the spoon. It is important to have full-bodied thin soups; otherwise they would taste like water.
The difference between a stock and a broth or bouillon as commonly referred to in French. While serving broths as soups, one should add reduced stock or glaze to give body to the soup.
B. THICK SOUPS
A velouté is a thick soup, which is thickened with a blond roux, passed and finished with a liaison. They may be vegetable or chicken stock based, for example, velouté of chicken. A roux is made by cooking equal amounts of flour and butter over a medium heat. The degree of cooking of the flour gives its name to the roux. A blonde roux is obtained by cooking roux until it turns blonde in colour. The texture of velouté is smooth and velvet like.
A cream soup is a passed thick soup. It may be vegetable based or even meat based; but most commonly vegetables are used to prepare cream soups. In classical recipes it is thickened with béchamel and finished with cream. Examples include cream of tomato, cream of mushroom, cream of chicken, etc. Modern trends, however, avoid usage of béchamel sauce because of health reasons and to retain the delicate flavours of the vegetables.
Chowders are not strained and traditionally they are seafood-based soups thickened with potatoes and finished with cream or milk, for example, clam chowder, seafood chowder, etc. Chowders are from the USA and the most classical version comes from Manhattan and hence the name Manhattan chowder.
There are several ways to thicken soups a little or a lot, depending on what consistency you're going for. Here are popular techniques and tips for getting the results you want.
Roux, which is equal parts fat and flour, is common as a thickener because it not only thickens, but stabilizes, too. If cream or cheese is being added to a soup, a bit of roux can insure it won't "break," or separate. Get step-by-step directions for making roux.
Add cornstarch to a small amount of cold water or other liquid (wine or stock) and whisk into a thick slurry. This slurry is stirred a bit at a time into the simmering soup at the end to set the final consistency of the soup. Just remember, after you add some of the slurry, let the soup return to a simmer—cornstarch is a very effective thickener, and a little bit can go a long way.
Cooked potatoes or rice can be mashed or puréed and added to soup for more body. Simmering potatoes and grains in soup will also thicken the liquid slightly. Bread crumbs are used to thicken Italian Wedding Soup.
Stir full-fat cream into warm, not boiling, soup to add richness and body after the soup is fully cooked. Full-fat milk and sour cream can also thicken soup, but be sure not to boil the soup after adding the dairy to prevent the soup from curdling.
A great trick to thickening a soup while intensifying flavor is to use parts of the soup itself as the thickener. Simply remove some of the soup solids—the aromatics, starches, even the meat—and puree. Use a countertop blender, food processor, or immersion blender for this task. Puree with care if using a countertop blender—the hot soup solids can actually spin out of the blender and make a big mess or cause burns. For best results, fill the blender no more than halfway (blend in batches if necessary). Hold down the blender lid with a thick towel while blending, and keep the lid on for several seconds after the blender is turned off.
https://www.allrecipes.com/article/thickening-soups/