While travelling on a flight last year, I casually took the shortbread biscuits [cookies] offered to me by the stewardess. The shortbread was especially good, and I turned over the package and began reading about the ingredients. Here’s what it said: “The Isle of Mull is renowned for wild and unspoilt landscapes and its welcoming islanders. It’s our home and where we make these particularly characterful biscuits. We mix only the best organic ingredients and bake them using unique ovens that are heated by Mull’s plentiful renewable timber. Like our organic ingredients this is not only environmentally sustainable, but…