St. Patrick’s Day Edition - Eliminating Plastic in your Guinness
Thursday, March 17th, 2011All four of my grandparents came to America from Ireland (counties Leitrim, Antrim, Cork, and Donegal). I’m Irish through and through - and last year went to Ireland for St. Patrick’s day with my children - here we are in a pub drinking a Guinness draft:

In the pub on St. Patty's day - Dublin
and of course we had to visit the Guinness brewery, where we learned all about the beermaking process, and why Guinness tastes so good!

Mary at her visit to the 'mothership' of breweries - Dublin
In many other parts of the world, Guinness is not available via tap (quiet sobbing in the background by lovers of Guinness); so we are relegated to cans. In order for the cans to work properly, they have a small plastic widget inside containing pressurized nitrogen, that allows the stout to be infused with nitrogen (vs. carbon dioxide for most lagers, etc.), contributing to its smoothness/creaminess. Anyone who’s had their first can of Guinness will invariably try looking at what’s rattling around the can after the beer’s been poured - and they see something like this:

plastic widget inside Guinness cans
However, according to this article, some enterprising Irish mathematicians have figured out a way for cellulose to produce the same volume of nitrogen while being biodegradable - eliminating the need for the plastic widget.
Showing that, once again, the Irish can combine their passions (in this case, science, beer, and the environment) into one concept, for the betterment of Guinness drinkers worldwide.
Images: Mary McDonald; and the Guinness widget (cc) by Flickr user slworking2, via Wired.
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