Possible Clues:

• Black grape variety
• Sweet red dessert wine
• Hence rag (anag) — red wine grape
• Low-down about right pain producing wine
• Dominant grape variety in most red Chateauneuf-du-Pape
• Young, losing heart, long for wine
• Red wine 7 that are used to make Châteauneuf-du-Pape
• Staggering range shown by revolutionary grape variety
• Heartless, jealous thirst for wine
• Heartless jade, say, longing for wine