Lobster roll war erupts in New England over controversial ingredient in 'die-hard' divide

Ordering a lobster roll "Connecticut-style" in Maine might garner a dirty look — or worse, a side of mayonnaise instead of butter.

A recent debate has heated up in Maine over how a proper lobster roll should be served: warm, with butter, or cold, with mayo.

Maine-style lobster rolls traditionally consist of cold lobster meat, either tossed in mayo or served with mayo on the side.

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A Connecticut-style roll typically includes warm lobster meat, poached in butter or served with warm butter on the side.

In both variations, the lobster is piled onto a warm, toasted split-top bun, usually brioche.

Despite the discourse over which style of lobster roll reigns supreme, Peter Bissell, co-owner of Highroller Lobster Co. in Portland, Maine, believes there's room for both.

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"We just want to make people happy with fresh, never frozen, Maine lobster meat, and our specialty mayos was sort of our differentiating factor," he told Fox News Digital. "But we're not dying on any of these hills. It's really good either way."

Highroller Lobster Co. is known for its specialty mayos, which come in flavors like roasted red pepper, fresh lime, roasted red pepper and roasted garlic. Instead of tossing the meat in mayo, the restaurant drizzles the mayo on top of the lobster roll in a zigzag pattern.

Those who opt for Maine-style lobster rolls tend to appreciate the tangy mayo combined with "the cool, refreshing interior of the sandwich [and] the crisp, warmed bread on the outside," Bissell mentioned.

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For guests who prefer butter, it's available at Highroller and always has been, Bissell said. It has offered warm butter on cold meat from day one, but warm lobster meat with butter is a relatively recent menu addition.

"We added Connecticut-style," Bissell said. "It's a $1 up-charge because the cooks, they poach it in butter for 45 seconds to one minute on the line, so now customers can order fully warmed meat with butter if they choose."

Of all the lobster rolls sold this past summer, about 50% were ordered with mayo and 50% were ordered with butter. Of the 50% with butter, 25% were Connecticut-style, according to Bissell.

Connecticut-based chef and restaurant owner Robert Marcarelli's approach to lobster rolls is not quite as flexible as Bissell's. His restaurants only sell Connecticut-style lobster, warmed with butter.

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"Connecticut is very die-hard butter, no mayo. As you head a little bit north, mayo starts coming into the picture," Marcarelli told Fox News Digital.

"I will try the mayonnaise ones here and there, but my favorite is just hot lobster with butter," he noted.

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Both Bissell and Marcarelli — and, probably, many customers — agree that what truly makes a delicious lobster roll is fresh lobster meat, not frozen.

"A lot of people are out there buying frozen lobster meat, and it doesn't matter whether you put it with mayo or butter, you could taste the difference between fresh meat and frozen," Marcarelli said.