Liquors such as scotch and whiskey work as substitutes for cognac in recipes. Other types of brandy also stand in for cognac when using it for cooking.
Many people look for substitutes for cognac in cooking recipes because of the cost of cognac. Most people simply do not keep it around, or they save it for specific occasions. Others do not consume alcohol and need to find a viable substitute for their needs. With this in mind, beverages such as apricot, peach and pear juice work as substitutes for cognac in recipes to keep the desired flavor of the dish or drink.