Actually there are restrictions on content when you consider that different wines have limitations on what additives may be included. For example, only citric acid can be added to citrus wines. Only malic acid can be added to apple wine. Only citric or malic may be added to any other fruit wine from berries, etc. You cannot add tartaric acid. Tartaric acid may only be added to grape wines.
Not all of the TTB regulations make sense for contents and labeling.
Not all of the TTB regulations make sense for contents and labeling.
