That darn Widget

For years now I have wondered what that widget was all about! You know the one in beer cans! Designed to give you a nice foaming head?

I have imagined all sorts of things inside that can.

A wee keg that releases CO2 and allows the froth to develop on the Guinness.
A hi-tech twizzle stick or perhaps in my wilder imaginations a little elf hard at work pulling the pint for you.

I have often thought of looking but assumed somehow that the widget disappeared after use or would explode if examined.

Having reached a grand old age I feel I can now afford to take my life into my own hands and risk all.

I reached in to the drawer and withdrew my favourite and necessary kitchen gadget the battery operated can opener. I placed it on top of the Guinness can and then retreated behind the handy kept in the kitchen cupboard 4 inch thick anti radiation blast proof wall (another favourite gadget) and ducked.

I heard it whir and cut and rotate, I waited.

Finally silence. A clean cut is achieved. Nothing has happened. So far so good. I approach the now open can and in great trepidation and curiosity lift off the top of the beer can.

At this point I wept.

A grown geek of a man broke down and wept like a wee lassie.

That mysterious widget lay before me in all its glory.

It must have taken years of development and all just to give me a nice creamy head.

What does it look it?

A white plastic marble.

What is it?

A white plastic marble.

Sigh.