A thick puff of marijuana smoke that is swirled around a snifter that has a pour of cognac and then inhaled. Doing so imparts flavors of grapes and honey to the inhalee.
Generally, using a blunt or a joint, smoke is drawn slowly into one's mouth and then dripped into a snifter with cognac in the bottom. The glass is swirled in the palm and after a few seconds the smoke is inhaled again.
Enjoy and repeat.
I've been toking for many years now, but that Henny Hit was the best tasting thing I've ever had!