Spanish Chefs Cook With Dirt, Dazzle Avant-Garde at Weekend DemoSpain’s cooking wizards convened at Guastavino’s Saturday to demonstrate their cutting-edge techniques. We figured the wine would be fabulous. We were counting on acorn-fed jamón ibérico to make Smithfield, Virginia, weep. But “Spain’s 10,” the all-star team headed by the illustrious Ferran Adrià, are known for their dazzling concoctions, so all we really knew to expect were surprises.