If you're just going to Troy, there's not much to offer you. Probably the closest to Troy is
Copper Canyon, I haven't been there in a few years, but it's not a place I'd drive across town for. OK beers if you work in that area and are getting off and want to grab something other than a budweiser with friends, but nothing spectacular.
If you're looking for Brewpubs in the Metro Detroit area I can steer you to a ton of great brew pubs. But you're going to drive a half hour of more away from Troy. But everything's pretty connected via the three major freeways, I-75, I-94, I-696 or usually a short combination of two or three.
One of the best in Michigan is
Dragonmead, about 30 minutes east of Detroit. In fact that usually where when hbt'ers come to town, we usually get a bunch of the local guys from here to meet up with them.
In Detroit Proper, the VERY FIRST brewpub in Michigan is on Wayne State University's campus, called the
Traffic Jam and Snug, they also make their own cheese, sausage, bread, etc. It's an interesting place, though I'm not a fan of their food. Right across the parking lot from TJ-s is my favorite micro brewery actually in the city-
Motor City Brew Works; MCBW is most famous for their Ghetto Blaster English Style Mild, which is listed in the BJCP as a classic example of the style.
Closer to Downtown
The Detroit Beer Company is on Broadway, they have some great beers as well. And here's the link from
Atwater Brewing
If you go to Dragonmead, you might as well try
Kuhnhenn's which is only a couple miles away. I personally prefer Dragonmead over Kuhnenns but GQ magazine or some such just ranked it high in North America
There's also some breweries around Royal Oak and Ferndale, I think they're all owned by the same company. Such as
Royal Oak Brewery, And the
Woodward Avenue Brewery These places I think are more geared to the "trendites" that frequent Royal Oak, Birmingham and Ferndale, than actual beer geeks...More style over substance. Some folks like them, but they're not "destination" brew pubs to me....Places I go out of my way to drink at.
Destination wise, THIS place,
Black Lotus in Clawson I think is worth a try...Not over Dragonmead per se, but they do interesting beers with unique ingredients. They usually have a couple odd seasonal or experimental beers on tap.
There's several more I can rattle off in the general area around Metro Detroit. But I think anyone coming into this area Really needs to hit up Dragonmead- They are know around the country for having either the first or secondmost highest amount of their own beer on tap at any one time. They try to have at least 1 beer for every BJCP category on tap. Plus several of their beers they will also have on Cask or even Nitrogen Dispensed.
Hope this helps. If you want more info let me know.