Coffea arabica

Last Updated on July 17th, 2019Coffea arabica is a species of Coffea originally indigenous to the mountains of the southwestern highlands of Ethiopia. It is also known as the “coffee shrub of Arabia”, “mountain coffee” or “arabica coffee”. Coffea arabica is believed to be the first species of coffee to be cultivated, being grown in … Read more

Coffee percolator

Last Updated on September 4th, 2018A coffee percolator is a type of pot used to brew coffee. The name stems from the word “percolate” which means to cause (a solvent) to pass through a permeable substance especially for extracting a soluble constituent. In the case of coffee-brewing the solvent is water, the permeable substance is … Read more

Frappuccino

Last Updated on July 17th, 2019Frappuccino is a trademarked line of blended coffee beverages sold by Starbucks. It consists of coffee, blended with ice and other various ingredients, usually topped with whipped cream. Frappuccinos are also sold as bottled coffee beverages in stores and from vending machines.

Terroir

Last Updated on September 4th, 2018Terroir is the set of special characteristics that the geography, geology and climate of a certain place, interacting with the plant’s genetics, express in agricultural products such as wine, coffee, chocolate, tomatoes, heritage wheat, cannabis, and tea. The concept has also crossed to other Protected Appellations of Origin (PDOs a … Read more

Dallah (coffee pot)

Last Updated on September 4th, 2018A dallah is a metal pot with a long spout designed specifically for making Arabic coffee. In particular, it is used in Saudi coffee tradition.

Degassing

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Coffee beans contain carbon dioxide immediately after roasting. The degassing starts right after roasting and is the process of seeping out the gasses from the beans. A lot of the CO2 leaves the beans in the first 24 hours after roasting, that is about 40%. Lighter roasts degass slower, whereas dark roasts degass faster. Gasses in the coffee beans is a sign of a freshly roasted coffee.

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Filtration

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Filtration is commonly the mechanical or physical operation which is used for the separation of solids from fluids (liquids or gases) by interposing a medium through which only the fluid can pass. Oversize solids in the fluid are retained, but the separation is not complete; solids will be contaminated with some fluid and filtrate will contain fine particles (depending on the pore size and filter thickness).

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Coffee filter

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A coffee filter is a utensil used during coffee brewing, for filtering coffee grounds from the brewed liquid. It is usually made of disposable paper with filaments approximately 20 micrometres wide. The fine paper screen only allows to pass through particles less than approximately 15 micrometres. This enables it to trap the coffee grounds that are bigger. The small water particles and the fines can flow through, resulting in clear coffee.

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Caffeine

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Caffeine is a bitter, white crystalline xanthine alkaloid that acts as a stimulant drug. Caffeine is found in varying quantities in the seeds, leaves, and fruit of some plants, where it acts as a natural pesticide that paralyzes and kills certain insects feeding on the plants, as well as enhancing the reward memory of pollinators.

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Arabic coffee

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Arabic coffee is a general name that refers to the two main ways coffee is prepared in many Arab countries: Turkish-style, and Saudi Coffee. The Turkish coffee brewing method is common in the Levant, but brewed without the addition of sugar. Cardamom is often added, or it is served plain قهوة سادة qahwah sādah (lit. “plain coffee“).

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Decanter

Last Updated on February 24th, 2018A decanter is a vessel that is used to hold the decantation of a liquid which may contain sediment. Decanters are normally used as serving vessels for wine. Decanters vary in shape and design. They are usually made of an inert material and will hold at least one standard bottle … Read more

Heat exchanger

Last Updated on September 4th, 2018A heat exchanger is a piece of equipment built for efficient heat transfer from one medium to another. The media may be separated by a solid wall, so that they never mix, or they may be in direct contact. They are widely used in space heating, refrigeration, air conditioning, power … Read more

Coffee culture

Last Updated on July 17th, 2019Coffee culture describes a social atmosphere or series of associated social behaviors that depends heavily upon coffee, particularly as a social lubricant. The term also refers to the diffusion and adoption of coffee as a widely consumed stimulant by a culture. In the late 20th century, particularly in the Western … Read more

Cup

Last Updated on September 4th, 2018A coffee cup is a container that coffee and espresso-based drinks are served in. Coffee cups are made of porcelain, ceramic, or tempered glass and they can have a handle for portability. Ceramic and porcelain provide insulation, maintaining the beverage hot. Tempered glassware needs a double wall construction in order to provide insulation. A coffee cup may also be a … Read more

Temperature control

Last Updated on September 4th, 2018Temperature control is a process in which change of temperature of a space (and objects collectively there within) is measured or otherwise detected, and the passage of heat energy into or out of the space is adjusted to achieve a desired average temperature. In the coffee making industry, the temperature … Read more

Pressure

Last Updated on September 4th, 2018Pressure is the ratio of force to the area over which that force is distributed. Pressure is force per unit area applied in a direction perpendicular to the surface of an object. Gauge pressure (also spelled gage pressure) is the pressure relative to the local atmospheric or ambient pressure. While … Read more

Flavor

Last Updated on September 4th, 2018Flavor or flavour is the sensory impression of a foods, drinks, or other substances, and is determined mainly by the chemical senses of taste and smell. The “trigeminal senses”, which detect chemical irritants in the mouth and throat as well as temperature and texture, are also very important to the … Read more

PID controller

Last Updated on June 30th, 2019In coffee maker industry the PID improves the brewing precision, by allowing the brewing temperature to be maintained between certain parameters. What is a PID, and How Does It Work? The PID of an espresso machine controls various heating elements of the unit. The PID controlled element can heat the … Read more