A big grocery store that'll probably have what you want at a perfectly reasonable price.
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It's a big-chain grocery store with like 15+ aisles, each of which typically has not only many types of one product, but many of that one type, if that makes sense. Basically, there's a lot of stuff here and you'll find what you want.
Niche stuff like vegan, kosher, and -free products might be a different story. Besides tofu, I don't buy that stuff or explore those sections very much. I would expect decent selections though.
The international aisle(s) are OK. They are large, but really no different than other American grocery stores. If you're looking for (south)east Asian groceries, check out the nearby Super 88.
It isn't perfect though. Like any grocery store, sometimes you'll walk in and some shelves are quite poorly stocked. This may be early morning, late at night, or after a busy day, but it happens. Additionally, I'm a big fan of unique/interesting fruits sand vegetables, which this place tends to lack. My comparisons are both the nearby Star Market and Whole Foods, which typically have something unique.
Personal gripe: this place doesn't have Turkey Hill Green Tea, which is my favorite. To be fair though, most places in Boston don't...
Anyway... It's a good grocery store and you know what you're getting here. ~John
grocery store