Possible Clues:

• Drink originally called 'blanc-cassis'
• White wine and cassis drink
• Brunch cocktail
• Brynner and Kerr, perhaps close to bar, drink!
• Crème de cassis cocktail
• Drink starts to kick in rapidly
• White wine drink
• Endless caterwaul of bagpipes could lead one to drink
• One in Sweden's ready for a drink
• Cassis-and-white wine cocktail