The key feature of New England-style hot dog buns that makes them unique is the fact that they are cut open vertically from the top rather than from the side.
In addition to being top-sliced, New England-style buns have flat sides that are easy to toast and aren't crusted like the top and bottom of regular hot dog buns.
The toasted bun elevates the taste and texture of the end product. Besides hot dogs, New England-style hot dog buns can also be enjoyed for lobster, clam, or crab rolls.