Green Izarra Sorbet

It is not always easy to find Izarra, the old herbal liqueur of the Basque country. Izarra means star. There are two types: yellow and green. The yellow is lighter in flavor, while the green is lustier and drier in taste. Izarra is prepared from an ancient secret formula, using exotic plants from the Pyrenees, herbs, honey, Armagnac, and spices, including saffron. The yellow type is made from as many as thirty-two plants; the green from forty-eight. When I visited the Izarra distillery in B