An oral syringe costs a couple bucks at any drug store. I’ve tried it and it works. Not sure I’d agree that it is ‘elegant’, but it does work…
http://byo.com/stories/item/743-head-games
[quote]By far the simplest, cheapest, and possibly most elegant way to get nitrogen in your beer and set a creamy head was inspired, again, by Guinness. …
Each six-pack came with a disposable initiator. The device was a small pump, like a medical syringe without a needle. The beer poured from the bottle with almost no head. The consumer was directed to use the initiator to suck up a little beer, then shoot it back into the glass at high velocity. This brought in some nitrogen-rich room air and seeded a bed of tiny nitrogen bubbles, creating an instant, creamy, Dublin-style head.
Upon discovering the concept, BYO researchers immediately tried to duplicate the technique. In other words, one night either too much beer or too much curiosity encouraged me to zap a glass of homebrew with a child’s medicine syringe.
…
Dosing Your Beer
The technique is exceedingly simple. Pour your homebrew into a glass, leaving an inch or two of headroom. Use the syringe to suck up some beer. Lift the syringe out of the beer and draw the plunger up a little more, until you have drawn an equal amount of air over the beer inside the syringe. You want a 50-50 beer-to-air ratio, but remember this is not rocket science.
Now, keeping the syringe above the surface of the beer, shoot it all back into the glass in one quick motion. Sit back and watch the bubble show. You will see that all-familiar dance, waves of bubbles rising from the bottom of the glass, forming a creamy, dense, nitrogen-seeded head. … [/quote]