Marinated Anchovies (Boquerones en Vinagre)   Category: Seafood | Occasion: Antxua Eguna (Anchovy Day, Spain)   Marinated Anchovies, also known as Boquerones en Vinagre, are a beloved dish in Basque cuisine. Traditionally enjoyed during Antxua Eguna, a festival celebrating anchovies, this Spanish delicacy features fresh anchovies marinated in vinegar, garlic, and olive oil, resulting in…