If a wine is Biodynamic, that means the producer is fully committed not only to a way of farming, but a way of winemaking... and they're usually a little eccentric. The concept of Biodynamics goes far beyond the grapes, and looks at the vineyards and winery as part of a universal ecosystem. Everything from the stars and phases of the moon, to the bugs that live in the dirt, to natural winemaking practices... everything affects everything! Rudolf Steiner is credited with the theory of Biodynamics which starts with the fundamentals of organics but takes it a step further as with previously mentioned lunar cycles etc., by actively promoting the soil as an ecosystem (including the organisms that live in said soil) through the application of specially prepared compost/manure that has been stuffed into horns and buried throughout the vineyards. It is not uncommon for us to hear, "Does he bury the horn?" when we go to tastings. It's weird, but it's a thing. There is also a biodynamic calendar that you can follow which suggests wine is more expressive on fruit/flower days than it is on root/leaf days (there's an app if you're curious to see if it's true). Overall, biodynamic wines offer the consumer a pure expression of terroir and grape, its pure juice... all killer no filler. If you ask the folks at Demeter whether you can be 'practicing biodynamic' they'll tell you it's like saying you're 'a little pregnant'. It's kind of an all or nothing approach. Governing bodies of biodynamics include Demeter in the USA and Biodivin in France.