American
From the website:
Ambonnay is Portland's first and only establishment featuring champagne and sparkling wine exclusively. We offer an extensive menu, many sparklers by the glass, another 50 or so by the bottle. And the selection changes weekly. Whether you're looking for a quick drink before dinner, a once-in-a-lifetime champagne experience, or just a place to hang with other folks getting their fizz on, Ambonnay is designed especially for you.
Over 50 champagnes and sparkling wines, selections here