Behind the bars of some of the nation's finest cocktail joints, there are secrets: secret recipes, secret bottles for friends only. One of these is the Green Dragon, a liquor potently infused with marijuana.

There've been alcohol-based tinctures of cannabis before, of course -- usually seen in turbid brown jars on windowsills, But one prominent New York bartender (I'll call him Jon) has been responsible for bringing the infusion up to date with modern, artisanal cocktail culture. Jon is a serious, technologically minded craftsman of beverages; he works as a cocktail consultant, and has designed the cocktail programs of more than one Manhattan bar.

He's refined a method that's quick, gives precise, predictable results, and reportedly maximizes the delicious herbal flavor of the drug, to provide a civilized sippable for the beverage connoisseur. Jon's nitrous-powered Green Dragon "just tastes good. We've dialed the strength back substantially, not because we can't make it stronger, but just because people want to be able to drink more of it, because they like it so much."