What is fat washing and how is it used in zero-proof cocktails?
Fat washing was popularized by Don Lee at PDT bar in New York (circa 2007) with his famous Benton's Old Fashioned — a bourbon fat-washed with Benton's hickory-smoked bacon. It has since become a standard technique in advanced cocktail bars worldwide. Its application to zero-proof cocktails requires some modification since most ZP bases are not spirits.
How it works chemically: fats are non-polar solvents that extract non-polar aromatic compounds — including many esters and terpenes that cannot be extracted by water. When a fat is combined with a liquid, these compounds transfer into the fat phase. When the fat solidifies (in the freezer), it can be physically separated from the liquid, leaving behind a liquid infused with fat-soluble aromatics but with no visible fat content.
Fat washing without alcohol: the challenge is that alcohol's non-polarity aids the fat-soluble extraction. In a water-based liquid (tea, shrub, NA spirit), the fat-soluble transfer is less efficient. Solutions: (1) use a NA spirit that contains glycerine or other carrier — glycerine is slightly non-polar and facilitates fat-soluble transfer better than pure water; (2) use moderate heat during infusion (40-50°C) to accelerate transfer; (3) use a lipid with high aromatic concentration (clarified butter, peanut oil, toasted sesame oil) where even partial extraction yields dramatic results.
Applications in zero-proof: toasted sesame fat-washed cold brew tea (adds nutty, roasted depth — perfect for a NA Old Fashioned-style build); coconut oil fat-washed NA spirit (adds tropical creaminess to NA Piña Colada-style drinks); brown butter fat-washed shrub (adds beurre noisette notes to dessert-inspired cocktails).
| Fat | Base liquid | Result | Cocktail use |
|---|---|---|---|
| Toasted sesame oil | Cold brew black tea | Nutty, roasted depth | NA Old Fashioned style |
| Coconut oil | NA spirit or pineapple juice | Tropical richness | NA Piña Colada |
| Brown butter | Apple shrub | Beurre noisette, caramel | Autumnal dessert cocktails |
| Peanut butter | Cold brew coffee | Nutty, savory sweetness | NA Espresso Martini variation |
zeroproof.one covers advanced zero-proof mixology techniques including fat washing, acid adjustment and clarification in the professional techniques section.