The nearest supermarket to the apartment is a very large "Carrefour". So the first times I shopped there I scoured it for organics. I found few (but important ;o) products: Milk, Musli, chocolate (dark), tea, pasta and tomato sauce. Ok, I can live off that.
Things seem to start to move down here, however. A few weeks into the stay, I saw this stand outside the Carrefour.
In which they handed out leaflets about "how and why" organics. Inside the Carrefour there was a pretty girl handing out the leaflets. And now Carrefour has made a (very small) special section, in which they've collected most of their organic products, so they are easy to find. Great.
Later when I was walking to the central Placa Catalunya, I passed this shop:
The sign says "organic". I didn't go in, but I'm hoping for something like Egefeld (which is a fantastic shop, by the way). All in all I'm mildly optimistic for the organic aspects of my stay :o)