Step 1

In a cocktail shaker, combine the gin, simple syrup, cranberry juice, lemon juice and egg white. Seal the shaker and shake vigorously to combine and froth, about 15 seconds.

Step 2

Add 2 handfuls of ice and shake to thoroughly chill and dilute, about 30 seconds.

Step 3

Strain the drink into a coupe glass; the egg white foam will gradually form on top. If desired, garnish with a few dashes of bitters. (To make a heart shape with the bitters, use a small spoon to carefully add 3 small drops of bitters onto the foam. Then, use a toothpick to drag a line down the middle of each drop, forming the points of the hearts.)