Champagne/ Bubbly come once in a blue moon. There is no limit to all the fun things that you can make with champagne.
For the Blackberry Champagne Margaritas
you will need,
1 cup blackberries + more for garnish
2 tbsp sugar
1 tbsp lemon (or lime) juice
4 oz champagne (1 oz = 1 shot)
2 oz tequila
Mix ingredients in a shaker. Garnish with Blackberries.