Tucked away on a narrow street, south of La Latina and west of Lavapies, there is a place. It barely fits the category of "restaurant." Monday through Friday its metal doors are closed and strewn with graffiti. But on the weekends, it comes alive.

El Capricho Extremeño is THE place to go for cheap tostas on Saturday and Sunday afternoons. While there are no menus, no waiters, and no place to sit, it serves up some of the best open-faced sandwiches in Madrid.
On some Saturdays, you'll be able to enter calmly and examine the sandwiches before telling the old, smiling man behind the counter what you want. If you're lucky, you'll even be able to order a beer to drink at the bar with your food. The tostas are not always the same each day, but at most times you can choose from an assortment - each one with a generous serving of toppings over ciabatta bread.

The usual options are pulpo de Gallega (Galician Octopus), tortilla de patatas (Spanish omelette), bacalao con pimientos (cod with peppers, olives and pickles) ensaladilla russa (potato salad with veggies and chicken/ham), smoked salmon, toasted brie with raspberry marmalade, and of course Jamón Serrano (the very famous Spanish ham!).
El Capricho Extremeño can be found on Calle de Carlos Arniches, 30.
The tostas are either €2.50 or €3 each.