There is no doubt that unwashed roots retain their protective skins and keep better. I live a muddy life, but having cooked in some of your kitchens I am wondering if I have been excessively dogmatic about the stuff; would it be better for us to do a quick wash (as we have the last few weeks when the carrots have been very muddy)? If kept in the fridge and eaten within two weeks I think the effect on flavour will be negligible. It would also help us to reduce packaging because there would be less need to contain dirt and the boxes would stay clean(ish) for more trips. If you would like to share your views on this topic, we would be very interested to hear what you think.