"Folks, when they come to a brewery, they want to meet the brewers," Katrivanos says. "And they want to connect with what they're drinking."

Another big thing is, of course, flavor.

Regulars Don Ripper and his friend Chana Morrow, who show up about once a week, are here for a tasting this evening.

"Really good balance," Ripper says as he sips a golden IPA called Folded Note.

Morrow has a darker brew, called Origins Unknown. "Nutty, malty," she says, as she savors.

A desire for beers that have more taste is, not surprisingly, a big part of what's driving the demand for craft beer. Just ask New District regular James Miervaldis — he says he loves the variety here and "how they experiment."

Does he ever drink Bud or Miller? "Oh, God no — never, never, never."

So, fueled by the unquenchable thirst of its customers for the next great flavor note, the craft beer industry has exploded like a poorly fermented bottle of home brew. Now 1 in every 8 beers sold in the U.S. is craft beer, and more than 20 percent of the money consumers spend on beer goes to independent and small brewers.

Flying Dog Brewery in Frederick, Md., was founded in the 1990s. But CEO Jim Caruso says there's been an even bigger boom since 2008, with a growth rate that's pushed the number of craft breweries to more than 4,000. Meanwhile, Caruso says, beer titans like Budweiser, Miller and Coors have seen sales trend down.

So the giant brewers have taken action. Anheuser-Busch has bought up a number of craft breweries, including Seattle's Elysian Brewing and Chicago's Goose Island, and Constellation Brands just paid $1 billion for Ballast Point, a San Diego craft brewer.

These developments, Caruso says, are persuading some people to start brewing because it's the next "get rich quick" scheme. And that's led to some newcomers "putting out some bad beer," he says.

He worries that if consumers get a few bottles of beer that's not good, they may get turned off the industry. "It may be months or years before they come back and try it again," he says.

But say you're confident in your brewing skills: Is there still time for you to get into the business?

Probably, says Bart Watson, an economist for the Brewers Association. New brewery openings outnumber closings nearly 10 to 1, Watson says. And the industry, which adds around $55 billion a year to the U.S. economy, now helps support 424,000 jobs.

But some parts of the country have become pretty crowded — perhaps overcrowded — with new breweries, Watson says. San Diego County, Calif., has more than 110 breweries, and Portland, Ore., has 60, just in the city proper. "Those places are really pushing the limit," he says.

The craft beer movement largely started in the West, Watson notes, and is now moving eastward. That's partly because state regulation of alcohol was strongest in the East after Prohibition and has been loosened more slowly. So, Watson says, in the East and the Southeast, there's lots more room for craft beer to grow.

And Watson offers another statistic that should ease concerns about a brewery bubble forming: There are about 8,000 wineries in the United States, and, he says, "Americans drink a lot more beer than they drink wine." So, he says, as long as many of them are small, and locally focused — "like a local restaurant" — he thinks there are plenty of opportunities and market niches where small brewers can thrive.

So go ahead, start your own brewery. Just expect to come up with an initial investment of around $500,000, and don't expect to get rich, says New District's Katrivanos. He is hanging on to his engineering job at the Pentagon until his brewery can pay him a salary. "If you're getting into brewing specifically to make money, I'd advise against it," he says. If that's your goal, he says, "You should go start a tech company."

Copyright 2016 NPR.