Bar Antonio serves the best tortilla in Spain and indeed the world. There is a long-running debate about whether caramelized onions should be in a tortilla and that question is decisively answered here. Yes! The soft potatoes are blended with slightly runny eggs and it contrasts with the light crunch of the pan-seared exterior. This tortilla is life-changing. It comes out fresh and hot. At 9:30 am a hushed crowd waits with anticipation for the world's most stunning Tortilla (Espanol) to descend from the spiral staircase....so, don't be late. Nothing can prepare you for a warm, dry, gooey, wet masterpiece served here. Since 1969 chef Jose Ramon Exkurdia has dazzled San Sebastian with some of the best Badque cuisines.