So I have finished up a 5 gallon batch of apple wine. I have degassed but have not back sweetened it yet. It appears to be CO2 free at this moment but Im concerned about the smell and taste of the wine. I realize it must be aged at least six months to a year. It has a harsh bite to it and not an apple smell what so ever. It does not smell like sulfur or eggs. I really cant describe the smell. The best I can come up with its a sour smell and taste but not like vinegar. Is this common with apple wine?