How to tell how much sugar is in these wines?

[Kcwhippet]

To make it a bit more confusing, the brix at harvest doesn't always correlate at close to 2:1. Zinfandel is a prime example, because it ripens so unevenly. You generally have grapes that are perfectly ripe along with raisins and not quite ripe grapes all in the same bunch. When you make Zin, you crush the grapes and sit the must overnight to let the raisins plump before innoculating. During that time, the brix can rise two points or more, which will raise the % alcohol if fermented to fully dry. Winemaking is so much fun.