The Difference Between Cheap and Expensive Liquors:
One of the big differences between cheap and expensive liquors are the amount of congeners that reside in each bottle. A congener is a substance other than the desired type of alcohol ‘ethanol’ produced during fermentation. These substances can include small amounts of chemicals such as methanol, fusel alcohols, acetone, acetaldehyde, esters, tannins and aldehydes. While congeners contribute to hangovers, the worst congener is acetaldehyde which is 30 times more poisonous than alcohol. The more expensive liquors have fewer congeners because they use filtration and also distill their product multiple times. The more times a liquor is distilled, the more pure the product will be. The cheaper liquors will skimp on filtration and only distill their product once. Dark liquors generally have more congeners as they do add taste to the liquor. A clear liquor, if it’s distilled enough and has decent filtration can be very pure.
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