Are they natural? organic? authentic? biodynamic? sustainable? or what?
Well let's start with the easy ones first, then move on to the more complex ones!
I don't use any pesticides, herbicides, insecticides or any chemical whatsoever in my vineyards.
Every two years or so I add organic manure from a sheep and goat farm located in the mountains behind Madrid.
I also add back the canes from the pruning. After pruning, I leave the canes in the lanes between the rows of vines and in summer a tractor comes and at the same time cuts back the grass and plants and chops up the canes.
I could say that my wines are organic wines, but this is more tricky because of all the different legislations in different countries. I've been working completely organically, or naturally, or with minimum intervention in the winery since 2003, and by default I don't add any substances at all to the must or wine; neither do I use any aggressive or intensive high-intervention processes. If I were certified, my wines would easily comply with any legislation.