Assertion: vodka's impurity | /r/CapableOf | flavour spirit
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Source sentences:
text: According to The Penguin Book of Spirits and Liqueurs, "Its low level of fusel oils and congeners—impurities that flavour spirits but that can contribute to the after-effects of heavy consumption—led to its being considered among the 'safer' spirits, though not in terms of its powers of intoxication, which, depending on strength, may be considerable.