any guesses

I'm too mean to offer prizes but anyway you'll never guess.(... and the fact its such a bad picture doesn't help.)
So I'II tell you.
Its a bit of melted plastic, right? Not just any old bit of melted plastic though. This bit was melted during dinner last night as Margaret left a plastic base on top of the log burning stove which rather affected the excellent meal :)
Hilary and Mike, John, Margaret and Bob were mercifully not overcome by fumes but some of us were rather overcome by booze and are a bit slow this morning. Its snowing - grumpy, granular, mealymouthed snow - so the market is slight. Its a dozy day by the fire for me.

Thanks for an unforgettable evening folks!