If the moon is not in the right moon phase the wine may taste much worse, that is at least what Tesco and Marks & Spencer, two of Britain’s biggest wine retailers think. They only invite to tastings on days when the moon is in an appropriate position for tasting. This is inspired by the so called biodynamic sowing and planting calendar where days are categorised as appropriate for different activities. Some days are good for planting, other for harvesting etc. And apparently, some days are better for tasting than others. Jo Ahearne at M&S was doubtful but after having made comparative tastings he was convinced that it made a big difference. Time to reschedule your tastings? (Note: The calendar, established every year by Maria Thun, is not strictly speaking part of the biodynamic principles, but many biodynamic growers use it. Many growers who are not biodynamic also look at the moon phase to decide the appropriate days for e.g. bottling or racking.)