Related Clues:

• Alcoholic beverage
• Maturing
• Choice from a list
• Chenin blanc, for one
• Soave, for one
• "Sideways" subject
• Ripening
• *See 9-Across
• ___ neutrality
• Its cause is what rocket scientist Robert Truax predicted would be found and corrected by 2010
• Medoc or pinot
• Sitting around for years waiting to get drunk?
• Lifelong process
• With 20-Across, natural energy source
• A process everyone would like to avoid?