The sun was hot on my back as I sat in the garden watching the grandchildren play.  There on the table in front of me was a piece of Toblerone.   It was tempting, despite the fact that there were a few child-sized teeth marks in the peaks of the chocolate mountains.   I reached out my hand and discovered it was not just my back that was soaking up the sun….the Toblerone had gone soft – complete meltdown!