Most people included professionals believe that, when using beer, wine or other alcoholic beverages in recipes, a lot of alcohol is left after cooking. Here are the facts. Alcohol remaining after preparation: 100% Immediate consumption 70% Overnight storage 85% Boiling liquid, remove from heat 75% flamed Alcohol remaining: baked or simmered: 40% 15 min. 35% 30 min. 25% 1 hour 20% 1.5 hours 10% 2 hours