Tapas, everybody has heard of tapas, but what exactly is a tapa? A tapa is a small portion of food that you get when ordering a drink, normally beer or wine. Depending on the bar, it can vary from peanuts to Spanish omelet or even a small portion of paella.
In some parts of Spain (e.g. Granada and Leon), the tapa is free. Unfortunately, this is not the case of Barcelona where you have to pay for them. Source: tourisminbarcelona