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Poaching is a type of moist heat cooking technique that involves cooking by submerging it in liquid, such as water, milk, stock or wine. Poaching is differentiated from the other "moist heat" cooking methods, such as simmering and boiling, in that it uses a relatively low temperature (about 160–180 °F (71–82 °C)). This temperature range makes it particularly suitable for delicate food, such as eggs, poultry, fish and fruit, which might easily fall apart or dry out using other cooking methods.
It is often considered as a healthy method of cooking because it does not use fat to cook or flavor the food. However, poaching can lead to the trivial production of mutagenic agents, the effects of which are not fully understood.
One of the most well-known dishes made with the use of poaching is Eggs Benedict.
This moist-heat cooking method uses a sautoir or other shallow cooking vessel, heat is transferred by conduction from the pan, to the liquid, to the food. Shallow Poaching is best suited for boneless, naturally tender, single serving size, sliced or diced pieces of meat, poultry or fish.
This preparation involves smearing the inside of the pan with whole butter and adding aromatics into the pan. The items to be cooked are then placed on top of the aromatics presentation side up. Cold poaching liquid is then poured in until the product is partially submerged then heated. The liquid should never be allowed to boil but kept as close to boiling as possible.
This technique is similar to shallow poaching but the product is fully submerged. The pot used for deep poaching should hold the food, liquid, and aromatics comfortably, with enough room to allow the liquid to expand as it heats. There should also be enough space so that the surface can be skimmed if necessary throughout cooking. A tight-fitting lid may be helpful for bringing the liquid up to temperature. Leaving a lid on throughout the cooking process may actually cause the liquid to become hotter than desired.
The poaching liquid is called a cuisson and traditionally uses a court bouillon which consists of an acid (wine, lemon juice) and aromatics (bouquet garni and mirepoix), although any flavorful liquid is capable of being used in poaching. The liquid should ideally be around 160–185 °F (71–85 °C), but when poaching chicken, it is vital that the chicken reach an internal temperature of at least 165 °F (74 °C) in the core, in order to be ingested safely.
A significant amount of flavor is transferred from the food to the cooking liquid. For maximum flavor, the cooking liquid (cuisson) is usually reduced and used as the base for a sauce.
Poached eggs are generally cooked in water and vinegar, fish in white wine, poultry in stock and fruit in red wine.
Poaching allows the proteins to denature without pulling out too much (if any at all) moisture out of it. For this reason, it is important to keep the heat low and to keep the poaching time to a bare minimum, which will also preserve the flavor of the food.
Typically an egg is poached just to the point where the white is no longer runny and the yolk is beginning to harden around the edges. Some people say creating a whirlpool helps with poaching eggs because it really helps the egg stay together, wrapping the white around the yolk.
Comparison to other methods of preparation
Water is a relatively efficient conductor of heat, but it also has a fairly low limit to its maximum potential temperature (212 °F (100 °C) at sea level). As such, it is a technique that applies itself to a broad spectrum of methods and results. It is used to regulate food at a low temperature for extended periods, as with sous-vide. It is also used to rapidly raise the temperature of foods, as with blanching.
Poaching itself is part of a family of moist-heat cooking methods but separates itself in that it is primarily for delicate foods such as eggs. Simmering generally uses a higher temperature for cooking, and because it surrounds the food in water that maintains a more or less constant temperature, simmering cooks food very evenly. Boiling uses the absolute highest temperature for water and is least likely to be used in cooking delicate foods.
While it cannot achieve caramelization, which to many is very desirable, many find the delicate nuance of so-called "blanc" foods very pleasant. Poaching is often confused with stewing, as both techniques involve cooking through simmering. However, the purpose of poaching is to cook while retaining the basic shape and structure of the food, rather than to soften it, as with stewing.
- Katz H., Solomon; Weaver, William W. (2003), Encyclopedia of food and culture, New York: Scribner, p. 95
- Jones, G. Stephen (18 June 2012). "Poaching Eggs, Meat, Chicken, Fish and Vegetables". Retrieved 29 January 2014.
- Robbana-Barnat, Saida; Rabache, Maurice (March 1996). "Heterocyclic Amines: Occurrence and Prevention in Cooked Food". Environmental Health Perspectives (Brogan & Partners) 104 (3): 283.
- The Culinary Institute of America (CIA) (September 2011). The Professional Chef, 9th Edition. Wiley. ISBN 978-0-470-42135-2.
- "how to poach an egg, smitten kitchen-style". Smitten Kitchen. Retrieved 31 January 2014.
- Alfaro, Danilo. "Poaching, Simmering & Boiling". About.com. Retrieved 31 January 2014.
- Lehrer, Adrienne (April 1969). "Semantic Cuisine". Journal of Linguistics (Cambridge University Press) 5 (1): 42.
- Tips and Tricks for poaching eggs
- Recipes and tips for poaching food
- How to Poach an Egg at b3ta.com
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