1/2 oz Grand Marnier
1/2 oz Cognac
1 2/3 oz Lemon Juice
5 oz Sweet Sparkling Wine
A Slice of Orange for garnish.

Boxcutters, Jigger, Shaker Classic/Boston, Citrus Juicer, Strainer, Ballon Glass.

Put 8-10 Ice cubes in a cocktail Shaker. Add the Grand Marnier, Cognac and Lemon Juice. Put the lid on and shake it, baby.
Pour it into a brandy snifter. Pour in the Sparkling Wine very cold. Add a couple more Ice cubes and the Orange Slice. Sip slowly.