There is a species in danger of extinction. Authentic Spanish bars. They are dying out leaving room for the two big phenomenae in Spains gastronomy: restaurant chains and design bars. They are difficult to tell appart, but they are both missing one little -heck no!- BIG characteristic: they are not authentic.
Nothing against them: they are clean, they are professional… But I guess that is my point: those are characteristics that are key for a hospital. But a bar?
Good news is: there are still many out there. How to recognize them? Simple and surprising: the floor is dirty and it is very loud. Menus are handwritten and still always wrong. “We run out of that, but we got excellent pulpo a la gallega” they might tell you. No-one will speak english, but dont worry, it will be to loud to notice anyways.
Am I recommending you to go to restaurants with dirty floors? Yes I am, but only if they are packed. My reco: if you see a restaurant full of people and the floor is dirty: they serve good and authentic food. Note: if its empty and dirty, the owner is just a lazy bastard. We got some of that too.
Look out for them: a species in danger that we might tell our kids about one day. Enjoy your tapas and don’t worry about throwing anything on the floor when finished: it will increase their revenues.