This tapa recipe comes from a bar in Madrid. I used to jog around the Retiro and then eat these tostadas washed down with a nice cold beer! When I serve this recipe at a party, it is always the first to go!
Heat the olive oil in a pan that has a cover. When the oil is hot, add the mushrooms, salt and sherry. Cover, and lower heat. Cook until liquid is released from the mushrooms, about 10 minutes. Drain and set aside.
Toast bread slightly, just to dry it out a bit. Spread with alioli and top with mushrooms. Broil for about 30 seconds or until alioli starts to bubble.
Tapas are Spain's greatest food invention. "Eat when you drink, drink when you eat" is the philosophy. Spanish men traditionally drink outside the home and rarely alone. They are not meant to be a meal (although a ración is a substantial portion). One tapa per person and a different one with each drink is the idea, then everyone enjoys tasting and sharing.