Make Half-and-Half Coffee

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Every cup of coffee you drink contains caffeine. In certain grades of coffee the caffeine content is low compared to a relatively marginal increase in other grades. Caffeine is a substance that helps you stay awake. If the purpose of having a cup of coffee is not to keep yourself awake, but for a pleasant tasting drink, then you will need to decaffeinate the coffee. Decaffeination of coffee is done my mixing decafs with the caffeinated coffee to make it a mild brewed coffee.

While the caffeine content in drip brewed Robusta coffee are high compared to Arabic coffee, the drip brewed decaf coffee is found to contain the lowest amount of caffeine. Decaffeination of coffee starts with adding toxic hydrocarbons to reduce the caffeine content, but after research, this process has been abandoned. Water is used in some cases to make the coffee beans decaffeinated. Water is mixed with green coffee extract inside vessels to reduce the caffeine content through a battery process. The mixture of water and green coffee extract is then poured onto the coffee beans, and after a certain time, the coffee beans are rinsed and dried. The green coffee extract, which is then rich in caffeine, is passed through charcoal that absorbs the caffeine.

Another process to decaf coffee is with the use of Methylene Chloride. This chemical together with coffee oil is used to make the caffeine dissolve and allow it to be extracted from the coffee. Bananas, coffee, and apples may be used as these contain ethyl acetate, which is effective to dissolve the caffeine. Green and moist coffee beans are then treated with this solvent, and this permits the removal of caffeine. The coffee beans are then washed with water, and then dried to remove any trace of the solvent. This process of decaffeination is more effective than absorption by charcoal because the solvent is capable to extract more than 90% of the caffeine content.

The use of carbon dioxide has been found to be very effective for the removal of caffeine from coffee. Moisturized green coffee beans are kept inside big vessels under pressure of about 300 times that of atmospheric pressure. Carbon dioxide is then passed into the vessel, and under high pressure the carbon dioxide acts as a solvent for extracting the caffeine out of the coffee beans. A recycling process goes on, by which the carbon dioxide containing the caffeine extract is passed through water or charcoal, to absorb the caffeine. The gas is then circulated back to the high pressure vessel for processing a second batch. This process ensures about 90% removal of caffeine from coffee.

You can also mix half a cup of caffeinated coffee with another half of decaffeinated coffee that has been already prepared. This makes you drink less caffeinated mild brewed coffee. You can add flavors of your liking to have the real taste and flavor of decaffeinated coffee.

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