Coffee percolator

A coffee percolator is a type of coffee pot.

The percolator consists of a pot with a small chamber at the bottom, closest to the source of heat. A vertical tube leads from this chamber to the top of the percolator. Just below the upper end of this tube is a perforated chamber.

The percolator is prepared for use by placing the desired quantity of water in the pot, and a corresponding amount of a fairly coarse grind of coffee in the top chamber. It is important that the water level should be below the bottom of the coffee chamber.

The basic coffee percolator is heated on a stove. The water temperature rises until the water in the bottom chamber boils, forcing some of it up the tube to the top where it splashes down onto the perforated lid of the coffee chamber. This water then seeps through the coffee grounds, out through the bottom of the coffee chamber, and drops back into the water in the bottom of the pot.

Meanwhile, colder water rushes into the bottom chamber. After a few seconds it again boils and the process is repeated. In this way liquid is continually dripping through the grounds until the temperature of the liquid (now brewed coffee) in the pot approaches (but has not yet reached) boiling point, at which stage the "perking" action stops and the coffee is ready for drinking. In a manual percolator it is most important to remove or reduce the heat at this point, as most coffee-drinkers agree that it should never be allowed to boil. As it is said, "Coffee boiled is coffee spoiled".

Some coffee percolators have built-in electric heating elements (and should of course never be used on a stove). Most but not all of these automatically reduce the heat at the end of the brewing phase, to then keep the coffee at drinking temperature without boiling it.

Coffee percolators once enjoyed great popularity, but percolated coffee has more recently been largely replaced by French press, drip brew and renewed interest in espresso. Percolators still maintain a following. The coffee has a distinctive flavour that some particularly appreciate.



In the News

Captive Passage: The Transatlantic Slave Trade and the Making of the A
"The transatlantic slave trade was the second leg of a triangular economic route between Europe, Africa, and the Americas."This online exhibit examines this slave trade and "seeks to increase understanding of this maritime epic and its legacies in the modern world."Topics addressed include departure, middle passage, arrival, abolition, and legacy (such as food, education, religion, and music). Also includes images, a quiz, and a bibliography. From The Mariners' Museum, Newport News, Virginia.

Mars Rovers Survive Severe Dust Storms, Ready For Next Objectives
Two months after sky-darkening dust from severe storms nearly killed NASA's Mars exploration rovers, the solar powered robots are awake and ready to continue their mission. Opportunity's planned descent into the giant Victoria Crater was delayed, but now the rover is preparing to drive into the 800-meter-diameter crater (half-mile-diameter) as early as Sept. 11. Spirit, Opportunity's rover twin, also survived the global dust storms. The rovers are 43 months into missions originally planned to last three months. On Sept. 5, Spirit climbed onto its long-term destination called Home Plate, a plateau of layered bedrock bearing clues to an explosive mixture of lava and water.

Manage Long-Term Stress To Avoid Ill Health Effects
When stress never seems to go away, health can suffer. Not all stress is bad. The stress response -- also known as the fight-or-flight response -- occurs automatically and rapidly when a person feels threatened. The physical response may include increased strength and agility, quicker reaction times and increased heart rate and blood pressure.

Glaciers And Ice Caps To Dominate Sea Level Rise This Century, Says Ne
Ice loss from glaciers and ice caps is expected to cause more global sea rise during this century than the massive Greenland and Antarctic ice sheets, according to a new study. The researchers concluded that glaciers and ice caps are currently contributing about 60 percent of the world's ice to the oceans and the rate has been markedly accelerating in the past decade. The contribution is presently about 100 cubic miles of ice annually -- a volume nearly equal to the water in Lake Erie -- and is rising by about three cubic miles per year.

[Cool] Florida's Three Major Schools All Lose For the First Time Since
For the first time since 1978, the Gators, 'Noles and 'Canes lost on the same day.

The Voice of Hibakusha
Hibakusha are survivors of the atomic bomb blasts in Hiroshima and Nagasaki in 1945. This site presents transcripts of 15 hibakusha "eyewitness accounts of the bombing of Hiroshima. ... The individual accounts were input and translated into English by college students."Part of the Atomic Archive.

The Soldier's Heart
Companion website to a 2005 PBS Frontline program that "explores the psychological cost of war and investigates whether the military is doing enough to help the many combat veterans coming home with emotional problems."Features video of the full program and additional stories, interviews, readings, and expert options about post-traumatic stress disorder (PTSD) in soldiers. Includes 2007 updates on some of the people featured in the program, and a link to a related Frontline report.

Breast Cancer Recurrence Risk Test Cleared For Marketing
The U.S. Food and Drug Administration (FDA) has cleared for marketing a test that determines the likelihood of breast cancer returning within five to 10 years after a woman's initial cancer. It is the first cleared molecular test that profiles genetic activity.

[Ironic] LONDON: A jailed cocaine dealer is working as Santa Claus on
John Tams, who dons beard, boots and red suit to work in a cafe's Christmas grotto, said he wanted to give something back to the community...

US Watersheds: Underlying Geodynamic Processes And Human Impacts Consi
Two papers in the August-September issue of Geosphere consider watersheds in the US. The Yellowstone watershed is unique because of its changing discharge values over the twentieth century, as well as its overall lower scaled discharges with drainage areas. Climatic trends that control the timing of winter snowpack melting, increased frequency and intensity of forest fires, and increased human consumptive water use in downstream areas may all contribute to the observed behavior in discharges for the Yellowstone watershed.


MP3 Music Downloads

Preview songs, Download Free Music,Burn CDs at ITunes.com
iTunes_RGB_9mm

 


Google




InformationQuickFind.com - Find Information Fast

Links