Requirements
The maximum amount of sugar allowed for a trocken designation depends on the level of acid in the wine. For wine low in acid, a maxium of 4 grams per liter sugar is allowed. If the acid level exceeds 2 grams per liter, the sugar may exceed the acid level by 2 grams per liter, up to a maximum of 9 grams of sugar per liter. Most high-quality German white wines have a high enough acidity to be allowed up to 9 grams per liter of sugar under the trocken level. When used, the requirements in Austria are exactly the same.
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