The Pink Panther

I always loved the old Pink Panther cartoons.  Somehow this drink's color and insinuating, troublemaking punch reminded me of the namesake.

(per 2 drinks)

4 oz genever (grey-bottle Bols)

1 oz maraschino liqueur (Luxardo, obviously)

1 1/2 oz blackberry syrup (homemade)

Juice of 1 lemon

White of 1 egg

Shake all of the above vigorously over large cold ice cubes, strain into chilled fizz glasses and top up with 2-3 oz of soda water each.  Garnish with a lemon twist, if you like.