Rainy Day Sangria

20 oz. Burgundy Wine
10 oz. simple syrup
18 oz. club soda
6 oz. frozen lemon concentrate
6 oz. frozen lime concentrate
dash of cognac (optional)

Simple Syrup

Dissolve 1 ½ cups sugar in 1 cup warm water.  Gradually stir in enough water to make 2 cups.

Combine all ingredients, adding the club soda last.