Apparently you should try the "cuttlefish and algae cigar". The salmon special is apparently great too.
"Sitting on the left bank of the Guadalquivir River, the Barrio San Lorenzo is enclosed in Seville’s Casco Antiguo and is home to Eslava restaurant and tapas bar. A modern ambiance decorated with minimalist elegance, Eslava’s philosophy rotates around a creative elaboration of traditional Andalusian gastronomy, as a way to promote local culture through food. Using seasonal vegetables grown in the restaurant’s own organic garden, the menu’s strength lies in the freshness of the ingredients that go into dishes like lamb leg with rosemary honey, currants and pine nuts, or the clams with spinach."
— Article