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Trangia is a trademark for a line of alcohol-burning portable stoves manufactured by Swedish company Trangia AB. These stoves are designed primarily for backpackers, with a focus on light weight, durability and simple design. First sold in 1925, Trangia stoves were initially preferred to kerosene (paraffin) pressure stoves because they required only one type of fuel (alcohol, usually in the form of methylated spirit). Trangia's most unique selling point is that the entire packaged stove, including pots, is not significantly larger than a standard camp cooking pot. For this reason the Trangia has retained much of its popularity despite the development of alternative stove fuels and designs.

The key component of a Trangia stove is the burner. This is a small brass cup that looks and functions similar to a beverage-can stove. Fuel is poured into the burner and ignited. The heat from the flame causes the fuel to vaporize, forcing it out of 23 or 24 jets around the top of the burner, and producing a steady cooking flame. The burner includes a removable "simmer ring", which partially blocks the flame in order to reduce heat output. It also includes a sealed lid, so that extra fuel can be stored in the burner.

In addition to the burner, the standard stove set includes a base, which lifts the burner off the ground and has vents to provide airflow, and a windscreen, which protects the pot and flame (the latter leading to its Scandinavian nickname, the "stormkjøkken", or "storm kitchen"). The standard stove also includes two pots, a pot lid/frying pan, an optional teakettle, and a patented universal handle called a spondonacle (used to grip onto the lip of the pots and pans as well as the kettle handle for safe handling when hot). The entire set is designed to fit together in a single, portable package.

The standard stove sets come in two sizes: Series 27, which is designed for 1-2 people, and Series 25, which is suitable for 3-4 people. The company also makes a "Mini" version (sometimes referred to as Series 28), which is designed for one person, and includes only a burner, a small pot stand, a single pot, and a pot lid/frying pan.

Some third party sets are also available, which typically include a Trangia burner and a lightweight base to support the burner and function as a pot stand. These tend to use fuel less efficiently, but are considerably lighter. The Trangia burner is also a component in the Swedish military mess kit.

Originally, Trangia stoves were made entirely from aluminum (except for the burner, which has always been brass), in order to keep them lightweight. However, aluminum makes for a poor cooking surface, as food sticks to it, and it can add off-tastes to certain foods. Later, Trangia introduced teflon-coated pots and pans. These are better for cooking, but wear out faster as the teflon flakes off. More recently introduced is cookware made from titanium, as well as "Duossal" (a portmanteu of "duo", "stainless steel", and "aluminum"), which is aluminum with a stainless steel cooking surface.

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