Battambang is indeed awesome. In Dorchester, you will find the markets more Vietnamese-centric. You can still find a good deal of Southeast Asian foods, but some ingredients that are more common in Cambodian or Thai cuisine, and not used in Vietnamese cooking, can be hard to come by. Makrut lime leaves are a good example.
On a random note, the local Stop and Shop in North Quincy has started stocking a small selection of Asian produce. I’ve seen lime leaves a few times.
I also love that Battambang is T accessible. It’s a hike from south of Boston, but at least it’s an option.
