How many varietals are permitted in Châteauneuf-du-Pape, not including variants of the same varietal?

Châteauneuf-du-Pape, a prestigious wine appellation in the Southern Rhône Valley of France, is known for its rich and diverse wines. The region uniquely allows a total of 13 different grape varietals to be used in the production of its wines, creating a wide range of flavor profiles and styles. This flexibility is a hallmark of Châteauneuf-du-Pape, enabling winemakers to blend these varietals in numerous combinations. The permitted varietals include well-known grapes like Grenache, Syrah, and Mourvèdre, among others, each contributing to the complexity and character of the wines. This diversity is integral to the region's reputation for producing high-quality, robust, and aromatic wines. When considering the number of varietals, it is important to focus solely on the distinct types recognized by the AOC regulations, excluding any variations or clones of the same grape. This is why 13 is the correct answer, reflecting the unique blending tradition that defines Châteauneuf-du-Pape wines.