Combine all ingredients in a cocktail shaker but DON'T add ice.

Shake for literally as long as you can (at least 100 shakes), then add ice to the shaker and shake again, just until chilled.

Pour into a coupe or martini glass and watch in awe as an incredibly stable, tasty foam forms.

 You can stop there and get drinking, or be a Halloween hero and make a widow's web garnish.

Use a small black icing tube (the kind meant for lettering on cakes) to draw 4 concentric circles, then drag a toothpick through the icing in lines radiating outward from the center to make the spokes.