Pic(k) of the Week: Nitrogen fob

Jets of liquid nitrogen vaporize out of beer bottles necks, during a demonstration of nitrogen bottle-fobbing, arranged at the 2013 Craft Brewers Conference.

Fobbing during bottling is important in forcing oxygen from the bottle before capping. As the bottle leaves the filler, foam rises to the top of the bottle, due to the drop in pressure, displaying the oxygen in the bottle's headspace. This is known as "capping on foam." Bottling lines will often employ liquid nitrogen or sterile water "jetters" [to create fobbing].
—The Oxford Companion to Beer

The 2013 Craft Brewers Conference —presented by the Brewers Association— was held the last week in March, in Washington, D.C. (for the first time in its 30 year history).

Walter E. Washington Convention Center.
28 March 2013.

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More photos from the conference: here.

More coverage by YFGF: here.

Pic(k) of the Week: one in a weekly series of personal photos, often posted on Saturdays, and often, but not always, with a good fermentable as a subject. Camera: Olympus Pen E-PL1.

Commercial reproduction requires explicit permission, as per Creative Commons.