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Syphon is a brewing method for the hands on home barista! The method relies on vapor pressure and vacuum to brew coffee. This type of coffee maker was invented in the 1830s and have since been used in many parts of the world.
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The use of this brewing method can be traced back to the 1830’s where one of the first patents filed for a vacuum device was held by a German gentleman named Loeff from Berlin. Many more patents with “improvements” quickly followed, one being that of Madame Vassieux of Lyons, France in 1841 which looks markedly similar to the one which I’m currently using.
The Siphon works by heating and cooling the water gases (vapor) from the lower vessel (carafe chamber) to the upper vessel (infusion chamber) and back again as brewed coffee to the carafe chamber. During brewing, a small amount of water and vapors will remain in the carafe chamber so that the atmospheric pressure will uphold the column of water in the siphon. Once the proper brewing time has been reached (about 2 minutes for a 5-cup model), the heat is removed from the carafe chamber which relieves the pressure in the carafe chamber and allows the brewed coffee to “vacuum” back down from the infusion chamber.
Coffee-to-Water Ratio: We recommend starting with a 1:16 coffee-to-water ratio when brewing a Siphon coffee. So for every 1 gram of coffee, add 16 grams of water. Experiment from there to find the perfect ratio for you. Medium-Fine Grind recommended.