This calls back to Hanukkah's origins in the 2nd century B.C. when the oil light of a Jewish holy temple remained lit for eight days on a single day's worth of oil.
To make an olive oil-washed spirit that can be incorporated into cocktails, use high-quality olive oil. For a 750-milliliter bottle of gin or vodka, use ½ cup of olive oil.
For less prep, combine ½ ounce olive oil with citrus juice and gin or vodka. Then use the liquor as a base for any cocktail that pairs well with the oil’s rich, grassy notes.