A poached egg is an egg that has been cooked by poaching, that is, in simmering liquid. This method of preparation is favored because a very consistent and predictable result can be attained with precise timing, as the boiling point of water removes the temperature variable from the cooking process.
The egg is cracked into a bowl of any size, and then gently slid into a pan of simmering water and cooked until the egg white has mostly solidified, but the yolk remains soft. It is quite common for a small pat of butter or margarine to be added to the container for the egg, to prevent the egg sticking to its container. The 'perfect' poached egg has a runny yolk, with a hardening crust and no raw white remaining.
To prevent dispersion of the white of the egg, a small amount of vinegar may be added to the boiling water. Stirring the water vigorously to create a vortex may reduce dispersion. Special pans, with several small cups, allow a number of eggs to be poached at the same time. Other methods of producing poached eggs, such as using cling film to keep the egg perfectly formed have been documented.
Cooking time is about two and a half minutes if the eggs begin at room temperature, about three minutes if taken from a refrigerator. The exact time depends on the size of the egg, and other factors such as altitude and the design of the poaching apparatus. Dipping the eggs into cold water for a few seconds immediately after taking them out of the boiling water helps prevent over-cooking.
Steam poaching 
The term is also applied to a method whereby the egg is placed in a cup, suspended over simmering water, using a special pan called an "egg-poacher". This is usually a wide-bottomed pan with an inner lid, with holes containing a number of circular cups that each hold one egg, with an additional lid over the top. To cook, the pan is filled with water and brought to a simmer, or a gentle boil. The outer lid holds in the steam, ensuring that the heat surrounds the egg completely. The cups are often lubricated with butter in order to effect easy removal of the cooked egg, although non-stick egg poachers are also available.
The result is very similar to the traditional coddled egg, although these steamed eggs are often cooked for longer, and hence are firmer. Eggs so prepared are often served on buttered toast.
Dishes with poached eggs 
Poached eggs are the basis for many dishes in Louisiana Creole cuisine, such as Eggs Sardou, Eggs Portuguese, Eggs Hussarde and Eggs St. Charles. Creole poached egg dishes are typically served for brunches.
Several cuisines include eggs poached in soup or broth and served in the soup. In parts of central Colombia, for instance, a popular breakfast item is eggs poached in a scallion/coriander broth with milk, known as changua or simply caldo de huevo ("egg soup").
In India, fried eggs are most commonly called "poached," but are sometimes also known as bullseyes, as a reference to "bullseye" targets, or "half-boil" in Southern India, indicating that they are partly cooked. They are commonly served alone or as accompaniment to a variety of dishes including roti, dosa, or paratha. Bullseyes are commonly prepared over pans smeared with a variety of oils such as mustard oil and vegetable oil. During or after the frying stage, they are sometimes sprinkled lightly with condiments such as black pepper, chili powder, green chilis and salt. Bullseyes are a common street vendor dish in South India. Some restaurants also refer to them as "egg fry" (over hard) or "egg half fry" (sunny-side up).
- www.perfectpoachedegg.com. "What makes a perfect poached egg?". Retrieved 2008-07-26.
- www.whatscookingamerica.net. "Perfect Poached Eggs – How To Poach Eggs". Retrieved 2008-07-26.
- "everybody likes sandwiches: how to make the perfect poached egg". Retrieved 2009-08-02.
- "how to poach an egg, smitten kitchen-style". Retrieved 2009-08-02. Text " smitten kitchen " ignored (help)
- www.b3ta.com. "FEATURES: HOW TO POACH AN EGG". Retrieved 2008-07-26.
- John D. Folse, The Encyclopedia of Cajun & Creole Cuisine, Chef John Folse & Company Publishing, December 2004, ISBN 0-9704457-1-7
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