This is the most common tapas dish in any bar in Spain: olives, potato chips, and canned mussels. Early evening drinks would not be the same without some or all of these snacks, served with a beer or a glass of wine. It's the slight saltiness of the olives, the crunch of the thin potato chips fried in olive oil, and the hint of paprika and vinegar in the marinaded mussels. These are 3 elements that can always be found in Spanish store cupboards and usually kick off any tapas session. These simple, timeless flavors are still a staple in every bar.