Which two countries base their top PDO wines on the ripeness of the grapes at harvest?

Germany and Austria are renowned for their wine classifications that heavily factor in the ripeness of grapes at harvest, particularly in their Prädikatswein system. This system categorizes wines based on specific attributes of the grape, including sugar content at harvest, which is indicative of ripeness.

In Germany, for example, the levels range from Kabinett, representing grapes harvested at relatively lower ripeness levels, to Trockenbeerenauslese, where grapes are affected by noble rot and have high sugar concentrations. This classification system intricately links the quality and style of wine to the ripeness of the grapes, allowing for a greater focus on the natural characteristics derived from the terroir and the grape variety.

Austria employs a similar approach with its classification, particularly in its Qualitätswein and Prädikatswein categories. The ripeness levels are essential in determining the quality and potential flavor profile of the wine, often resulting in distinct wines that reflect their grape’s maturity.

The other countries mentioned in the options have different classifications and approaches that may not prioritize grape ripeness in the same manner. Thus, Germany and Austria stand out as the two countries where the ripeness of grapes at harvest is central to their PDO wine regulations.