Aren’t these kind of pretty?
I have this nasty habit of owning several coffee mugs, and not cleaning them out after using them. So what inevitably happens is that I always have a mini microbial experiment in my office. Here are three examples, three different coffee cups (just so you have a bit of info on the media, I use a lot of sugar in my coffee, and also have a bit of cream).
It’s been a while since I’ve dug into a Bergey’s Manual so I figured it might be easier to see if there are any microbiologists out there who know what we have growing in these images (I especially like the top one – you can see these white areas of clearing).
What’s kind of curious, is that the top one also exhibited a different kind of growth compared to the bottom two (which conceivably may have the same organism). What’s that about? The colour of the mug?