This photo is from Barcelona Photoblog where you will find not only wonderful photography but fascinating details of life there. Click through the link to see not only a wonderful description of spring in Barcelona but to find more links where there is more info about the food. For example, we learn that coques:
A coca is a sort of flat, elongated or round bread dough base baked and covered with different ingredients. Technically similar to pizza you could say, but different in taste. You can have coca de recapte where such base is adorned with escalivada - a mixture of aubergines and red peppers cut into strips and dressed with olive oil (recommended for "anti-baconists") - or you can find the sweet versions (trillions of them swallowed with cava on Sant Joan's eve) covered with glazed fruit, custard, pumpkin jam or just sugar and pine nuts. Although sold in pastry shops and bakeries we prefer the ones baked using traditional recipes and artisan wood fired ovens...