It's not easy to find Maine or New England style split-top hot dog buns in regular food stores. Amazon, some Target and Walmart stores might carry them. You can use regular hot dog buns and just trim off both sides of the buns a little bit. Lobster rolls are so good because the sides of the buns are coated with butter and then toasted to golden brown. This is the secret so every bite is buttery and crusty, just like the best in Boston!