La Fisna's owners, who are clearly big fans of Burgundy (you'll find several French wineries represented here), have made the leap from a wine shop to a bar, though there's still a room that serves as a shop. They make use of an entire wall to display the house specialities, which change occasionally. You'll find several high tables and stools, a bar they inherited from the previous owners, and posters and exposed brick to decorate the small but pleasant space. Not only can you choose from dozens of wines by the glass but if you fancy sampling a few different ones while you're there, you can also order by the half glass. The simple menu lists all the wines, and though it's easy to get lost in the vastness of the names and varieties of lesser-known grapes and wineries, you can (and should!) always ask for suggestions from the knowledgeable staff.
When you feel peckish, you can order treats like cold cuts, cheeses, roasted peppers with mackerel or 'salmorejo' cold soup. Not only is there quality in their selection, they also pay attention to details. Even the sourdough bread is handmade. La Fisna is an essential stop in Madrid for anyone interested in wine.