Those of us who make country wines deal with the thin wine question all the time. The basic issue is that fresh grape is the “ideal” ratio of sugar (alcohol yield), acid (fresh flavor), and fruity flavors, ,, and water has none of these.
Acid blend and bags of sugar can fix part of the problem. Extracts (Virginia Dare) or making a F-pack can build up fruity flavors, ,, and some add oak for missing body
welcome to WineMakingTalk, the good news is wine is forgiving and there are several ways to produce a pleasing drink.