Alcohol solubility of aromatics refers to the ability of ethanol to dissolve and carry certain aroma and flavour compounds from food ingredients. Many aromatic molecules have different solubilities in water, alcohol and fat. Because ethanol can interact with both water-soluble and some less water-soluble compounds, it can help extract and distribute aroma in sauces, extracts and beverages.
Ethanol is a useful solvent because it can dissolve a range of compounds that may be poorly soluble in water alone. The exact extraction depends on the ingredient, alcohol concentration, temperature, time and the chemical properties of the aroma compounds. Alcohol is not a universal flavour carrier, and it does not release every aroma more effectively than water or fat.
Water dissolves many polar compounds, while fat can carry many fat-soluble aroma compounds. Alcohol has properties that allow it to dissolve a range of compounds with different polarities. In a dish, these solvents can work together to create a more complex flavour profile.
Heating an alcohol-based preparation can change the balance of aroma compounds because ethanol and some volatile aromas evaporate. The finished flavour depends on when the alcohol is added and how long the dish cooks.
Chef’s tip: use alcohol as a measured extraction or flavouring ingredient, not as a guarantee that a particular aroma will be released. Choose the solvent and method according to the ingredient and the flavour you want to preserve.
This term is one of hundreds covered in depth across OCS courses, learning paths, and 1-on-1 coaching with Chef Eric.
