You are in luck! There's a Budweiser brewery about a mile north of Newark airport.
Good God. Is that place still open?
If I recall correctly there's an old abandoned GM plant nearby and I was always getting them confused. Besides, the question was about "good" beer.
I haven't been that way for a few years and was always more interested in the nearby Costco. The ethnic demographic is different and we could always count on getting food there we couldn't find elsewhere further south ... and besides, the Costco off Route 1 has a good beer, wine, and liquor selection.
Jersey has a few breweries but you'll find a lot of them on the Shore south of Newark near Asbury Park, Lakewood, and Toms River near where I live ....
I had a birthday dinner in Asbury Park at an unnamed German-style place where the food was average, overpriced, and the service sucked. Won't recommend it to anyone or be going back anytime soon.
Jersey doesn't have as many older, established breweries as Vermont or Colorado due to the PITA, noxious business regulations and building codes. We could do better. Distributors suck, too. I can get Great Lakes from Ohio, Founders from Michigan, Yards from Philly, and seasonal German imports to some degree but can't find High Point Brewing (Ramstein) out of north Jersey.
Go figure.