Sparkling Mistletoe Cosmo

Bahan-bahan (6 porsi)

• 2 cups vodka
• 1 cup Cointreau ((orange liqueur))
• 1 1/2 cups pomegranate juice
• 1/2 cup lime juice
• 1 bottle (750 ml) champagne
• pomegranate arils and sugared rosemary, for serving