Nice to see the good folks at Janek's in Passaic mentioned. They're a wonderful source for sausages, and they're immediately adjacent to the Polonia Bakery on Monroe Street.
Swiss Pork Store in Fair Lawn - source of the wonderful burgers at Dutch Tavern, and (I believe) some of the meat at Picnic the restaurant
Kocher's in Ridgefield - which is an incredible source for unusual German sausages, as well as a comprehensive meat offering. Frikadellen, for example:
frikadellen — a baseball-sized delight made with beef, pork, veal, chopped onions, breadcrumbs and fresh herbs.
Piast gets a good note, too:
If you’ve never had REAL kielbasa, check out Piast Meats and Provisions in Garfield, which blows those grocery store kielbasas right out of the water. Piast also has a terrific selection of other smoked meats and fish, and cheeses including farmers cheese, mothers cheese (available salted or unsalted, it resembles feta), and podlaski cheese, which goes well with fruit or dark bread. Oh, and if you’ve never had freshly made pierogi, well, look no further.
Pork belly sourcing is mentioned, too.
If you’re a stranger to pork belly, then perhaps its time to do something about it. A staple in Korean and Chinese cuisines, it’s pricey and not available in most of the larger chain supermarkets in our area. But, it’s easily found in the meat departments of Mitsuwa Marketplace in Edgewater and the H Marts in Englewood, Ridgefield, Fort Lee and Little Ferry.
There are plenty of terrific recipes available online, but pork belly shines brightest when prepared as simply as possible. Try it braised with garlic, some chopped vegetables (carrots, celery, onions) and a bit of fresh thyme.