Blue Partridge

I really wanted to post this before Christmas as it is a rather festive holiday cocktail, but it's o.k. to drink it any time of year! This recipe requires blueberry juice which I buy in an ethnic grocery-- it shouldn't be too hard to find.

2 oz. pear vodka
1 oz. St. Germaine
1 oz. sweet and sour mix (which consists of equal parts of lemon juice and simple syrup)
2 oz. blueberry juice
1 egg white, room temperature
a dash of rhubarb bitters

Combine everything except the bitters in a shaker full of ice and shake vigorously with enthusiasm. Strain into the prettiest cocktail glass you have and add a dash of bitters.