Blue line down to Van Dorn Street Metro will get you within a do-able walking distance. Probably about 10-15 minute walk — over the bridge over the train tracks and then left on Pickett. It is probably a cheap Uber or cab ride from that metro stop, if don’t want to walk it (or walk back from the brewery to the Metro).
There are some places that have will have one or two Aslin beers on tap at any given time, but hard to know if in rotation. (Even the brewery rotates beers on a daily basis, and I’m always checking the website or Instagram for drop announcements.). Best way to do it may be look on Untappd and try to “find it,” if you can’t make it to the brewery.
If you really want to try their stuff, brewery is best bet because they will have about 10 of their beers on tap, plus another 6 or so available for can or bottle purchase. Website is updated every morning with Alexandria Draft and To-Go beer lists. I’ve been waiting for another drop of the Double Orange Starfish or Masters of Karate.