It's stuffed into a much thinner casing than regular chorizo specifically so it cooks through in barely a minute over open flame.
Txistorra is a long, thin, fresh pork sausage seasoned with paprika and garlic, grilled quickly until the skin blisters, then sliced into a length of bread. Street fairs and market grills across the Basque Country cook it fast and sell it hot.
Churros con Chocolate
Empanada Gallega
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Cava