Even though they have no obligation to, usually a dish that contains alcohol will say it's cooked in beer or it has a wine sauce. Being prepared with an alcohol

Even though they have no obligation to, usually a dish that contains alcohol will say it's cooked in beer or it has a wine sauce. Being prepared with an alcoholic drink is usually considered classier. I think it's more likely for the restaurant to say they used wine or beer and, in fact, there is no alcohol but just flavourings, than it is for them to omit that part of the recipe.