Former House Speaker Newt Gingrich Newton (Newt) Leroy GingrichMORE (R-Ga.) said President Trump’s “invariable” love of fast food shows he’s a middle-class guy at heart.

"Trump would wander through the line and get a cheeseburger and fries,” the former House Speaker wrote in his new book “Understanding Trump," according to a sneak peek in the Washington Examiner.

“It was a very practical reminder that in his heart Trump was raised as a middle-class guy from Queens, not a Manhattan socialite,” Gingrich wrote.

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The Republican veteran also revealed the president is a fan of a group of fast food staples.

"Any time a meal was served when I flew with candidate Trump aboard his nicely outfitted 757, it was invariably McDonald's, Wendy's, or a similar fast food," he said.

Gingrich’s book, which is set to be released June 13, chronicles what he learned advising Trump throughout the presidential campaign and the early days of his administration.