Bocadillo

The bocadillo or bocata (in Cheli), in Spain, is a sandwich made with Spanish bread, usually a baguette or similar type of bread, cut lengthwise. Traditionally seen as a humble food, its low cost has allowed it to evolve over time into an iconic piece of cuisine. In Spain, they are often eaten in cafes and tapas bars. Some bocadillos are seasoned with sauces like mayonnaise, aioli, ketchup, mustard or tomato sauce. They are usually served with cold beer or red wine, drinks, coffee and a portion of tapas. Different types of bocadillos are available in different parts of Spain, such as the serranito, almussafes and esgarrat.

Source: Wikipedia