# How-To Steps:
01 - Place two wine glasses in the refrigerator for 10 minutes to ensure optimal service temperature.
02 - Pour 1.7 fl oz of crème de cassis into each prepared glass.
03 - Add 5.1 fl oz of chilled dry white wine to each glass.
04 - Gently stir to blend ingredients without disturbing the wine's carbonation.
05 - Add ice cubes to each glass if desired for additional chilling.
06 - Top with fresh blackcurrants or a lemon twist and serve immediately.