A few words about this item from chef José Andrés:

You cannot know Spain without savoring this authentic tapa. These mussels in 'escabeche' are crafted by artisans who specialize in the seafood of Galicia. The mussels come from the region's rocky shores, harvested in the traditional way and carefully cooked and shelled by hand to bring you the plumpest, most perfect mussels. Prepared in an 'escabeche' sauce, a classic marinade of olive oil, vinegar, paprika, salt, bay leaves, pepper and cloves, these mussels are easily enjoyed with a bottle of good wine for an any time party.