When you think of fermented beverages in Spain, you probably think of wine. The tempranillos and albariños made there are revered around the world.
But in the far north of the country — the regions of Asturias and the Basque Country — they grow apples, not grapes. In the north of Spain, cider is king.
Spanish cider sets itself apart from that of other regions by its dryness and acidity. The apple varieties grown in the region — Errezilla, Abalia, Altza, Andoain and others — are higher in acid and tannin than most. The resulting ciders are light and tart, finishing with a refreshing pucker. That higher acidity makes them perfect for drinking with food.
Spanish ciders are also naturally fermented using the wild yeasts that populate the skin of the fruit. This gives them a mild spicy and barnyard character that adds a feel of rusticity. Bottled "on the lees" (the sediment that occurs during fermentation), they can pour quite cloudy. The suspended yeast adds fullness to the mouthfeel.
The way a Spanish cider arrives in the glass is important. In the region's many sagardotegia, or cider houses, cider is "thrown," not poured. In the most traditional cider houses, cider is poured directly from large chestnut barrels. The txotx (chutch) — a wooden peg sealing the barrel — is removed, releasing a long arc of cider that is caught in glasses held at an angle to allow the flow to hit the side of the glass.
In cideries where bottled cider is served, especially in the Asturias region, a skilled cider server or escanciador holds the bottle high above his or her head and pours into a wide-mouthed glass held as low as the arm allows. The most skilled will do so while looking straight ahead.
The aggressive pour releases carbon dioxide from suspension, giving these otherwise still ciders a delightful tingle. The effect doesn't last long, though. For this reason, cider is poured only a few ounces at a time. Drink it quickly and then go back for more.
This method really does improve the character of the cider. I encourage you try it at home. But do it over the sink.