This is due to the fact that vodka is primarily produced to be a smooth,
neutral grain spirit with as little flavor and aroma as possible,
despite the fact that it has minor flavors that are a result of the ingredients and the production method.
If you are unfamiliar with the alcohol, vodka is a transparent liquor that is made up of ethanol and water.
The fermentation of potatoes, wheat, rye, corn, or any number of other materials also results in the production of ethanol.
Following the fermentation process, the liquid is distilled (often numerous times to eliminate any contaminants)
before being filtered through charcoal or other components (in the case of Reyka, volcanic rock).