I drink a lot of hot drinks throughout the day, coffee and herbal teas mostly. I have a wide variety of mugs I like to use, and a couple of strange rules have arisen. First, most of my mugs are strictly divided into coffee or tea mugs. There’s no cross-contamination between the two. There is only one exception, and that’s a set of matching pottery mugs that I put out ‘for company’, and they have to be flexible. Secondly, some mugs are mine and some are Martin’s. We share a couple of them. Technically I could banish these rules and make it a free-for-all. The world wouldn’t end if coffee…