Post 3- A Respectable Cappuccino in Our Nation's Capitol
I've found that a pretty good measure of a coffee shop is their cappuccino. It's a combination of well-sourced coffee, experience, and willingness on behalf of the management to shell out thousands of dollars to buy the equipment. Far be it from me to say that this is the only thing you'd want when getting coffee (a great pour-over is a wonderful thing), but if you're somewhere new and want to find a reliable cup, this is the best way to test their meddle. The mechanics of what goes on behind the scenes to make a fantastic cappuccino are somewhat extensive, so for the uninitiated I'll provide a quick rundown.
A cappuccino is espresso and frothed milk (1 oz espresso to 3 oz milk is fair- any more and you venture into latte territory). Pulling espresso is a science to itself, but suffice it to say that if it tastes really bitter, someone messed up. You push hot water through coffee grinds with a lot of pressure, and ideally you want to get your shots pulled before the coffee gets over-extracted and turns bitter. It takes a lot of messing about with grind size and timing. I hear Nathan Myhrvold spent 50 or so pages in Modernist Cuisine talking about it.
Milk frothing is incorporating air into the milk by blowing steam in. There seem to be two camps about how it should turn out - one says that the extra foam should go on top, and the other has it incorporated into the milk (incorporated makes it possible to have latte art). My preference is for incorporated, and it seems that the places that can pull this off have better espresso. Easy tell- if there's a design on your coffee, things are looking good.
I'm ready to move on. That took longer than I thought.
There are two places that I found fantastic cappuccino, and I'll give them to you in order.
M.E. Swing Coffee Roasters- From the outside this place looks like an office. I don't know how to explain it other than that. It's drab and you can't see inside. If you could, though, you'd notice the mahogany counter they moved in from their original location in front of a big mirrored display that came with it in the move. In the afternoons it's crazy, but they seem to move rather quickly. Shouldn't be more than a 10 minute wait at the worst (don't hold me to that, though). And it's worth it. Oh man, what a coffee.
They roast their own beans fresh daily (and they have almost 100 years practice at it), so they're already a bit ahead of the game. Their cappuccino was wonderful. Their location is pretty decent, too- they're right next to the White House. There's a helpful tidbit, tourists.
They also sell their coffee (and tea). The scales seem to be as old as the countertop, which gives a nice effect to the whole transaction. I bought a half pound, and can understand what kept them in business for the past century.
Filter Coffee house & Espresso Bar- This is a converted English Basement apartment just off Dupont Circle (20th and S, for those too lazy to google it). A really great place. The first time I came to DC I was staying in the Hilton nearby, and stumbled in there in a caffiene-deprived haze. It’s the kind of place where the [few] tables fill up with people on laptops, but you can probably find a seat if you need one. There are tables outside, which I prefer, but your cappuccino won’t necessarily survive the walk unless you can pace yourself (which I can’t).
Filter gets their coffee from a local roaster in Annapolis, Caffe Pronto. I haven't had their coffee anywhere else, but from this it seems pretty great.
There's an honorable mention to Bourbon Coffee- a Rwandan import that opened in DC a few years ago and just opened their second American location in New York. The cappuccino wasn't all that great, but Girlfriend got a sangria coffee which was rather interesting. It's a standard joe poured over an orange rind (or something like that). Unique and worth mentioning. They also, for the record, roast their own coffee and a pour over is pretty worthwhile.
That's my list. There's probably another place somewhere that makes good cappuccino. Georgetown has a bunch of coffee/espresso bars, most of which I haven't tried. I'm not saying there isn't any other good coffee in DC, I'm just saying I can't vouch for it. Why risk it when I can just go back to M.E. Swing.