"good brew" refers to a well-made or tasty drink, typically referring to coffee, tea, or beer. It means that the drink has been prepared skillfully and tastes really good. Full definition
If that's not enough, the beer garden café (with sand under your feet, no less) will feature the hotel's signature Best Brews ™ program, highlighting the best local draft beers around. (thehoneycombers.com)
Even though I've been making Kombucha and Kefir for years, I learned some new tips and tricks for better brewing (and some really cool ideas of ways to use Kombucha!) (wellnessmama.com)