Coffee percolator

A 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 the coffee grounds, and the … Read more

Terroir

Terroir 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 form of geographical indication), products … Read more

Dallah (coffee pot)

A 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

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

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

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

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

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

A 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 of wine (0.75 litre). A … Read more