Sidra, or cider, is a traditional Basque drink that is popular in San Sebastian and the surrounding region. It is made from fermented apple juice and has a slightly tart and fizzy taste. Sidra is typically poured from a height to create bubbles and release its natural carbonation. It is often enjoyed alongside pintxos, the Basque version of tapas, and is a common sight in the bars and cider houses of San Sebastian. Drinking sidra is a social experience, with friends and family gathering around to share a bottle and enjoy the lively atmosphere. When visiting San Sebastian, be sure to try a glass of sidra to immerse yourself in the local culture.