Does pressure cooking preserve alcohol?
Since a pressure cooker does not release any vapors, all of the alcohol will remain in the pot until you open the lid. In fact, even when cooking in an open pot, a large amount of alcohol will remain in your liquid(Wikipedia:Cooking_with_alcohol). While it is true that alcohol has a lower boiling point than water in their pure forms, a mixture of water and ethanol will boil together, with both water and alcohol vaporizing. Wikipedia: Raoult's Law