Bar Gernika on the Basque Block is the most straightforward place to eat Basque food in Boise, and one of the most authentic Basque bars outside the Pyrenees. The menu is simple: lamb sandwiches, Basque chorizo, croquetas, and the essential chistorra (a thin, paprika-red Basque sausage) served with crusty bread. Rioja and Basque cider are the drinks of choice.
The bar itself is dark and casual, with old photographs of the Basque country on the walls and the kind of comfortable noise level that encourages long lunches. Go at lunch on a weekday if you can — the evening crowd can make service slow. Prices are reasonable by any standard. It is one of the best places in Boise for a quick meal that actually tells you something about the city.