Meat mystery solved.

The New York man who recently told The Post about finding a pristine In-N-Out cheeseburger sitting on a Queens street claims he’s figured out how the double-double wound up so far from home.

Lincoln Boehm, 31, said Wednesday that after posting about the puzzling patty on Instagram, he received a message from Helen Vivas, a 16-year-old Queens girl, who said she had dropped the burger while running to catch a bus.

“Helen was sincere, and from the jump I knew this person may hold the answers I’ve spent the last four days searching for,” Boehm wrote in a first-person essay on Vice.

The high schooler, who attends Veritas Academy in Flushing, told Boehm she picked up the burger at one of the West Coast chain’s outposts in Encinitas Calif., July 19, before getting on a red-eye JetBlue flight back to the Big Apple.

As proof, she provided a screengrab from her Instagram story of the In-N-Out restaurant she went to, her receipt from the eatery and her flight information.

“At the counter, she made it clear to the In-N-Out employee taking her order that she was about to board a flight, and asked for suggestions to preserve the burgers as much as possible,” Boehm wrote.

She ordered two double-doubles without sauce, explaining how the burger stayed in mint condition. She also bought two single cheeseburgers, with the vegetables packed in separate baggies.

Once on the plane, she ate one of the double-doubles — and kept the bag containing the other sandwiches on her lap for the entire flight, Boehm wrote.

She landed at JFK airport Saturday at 5:27 a.m. and took the AirTrain to the Jamaica station in order to catch the Q44 bus home.

That’s when “she saw the bus sitting a block away at the stop, about to leave” and ran to catch it, Boehm wrote.

“The good news: She caught the bus. The bad news: The bag burst open at the bottom while she made this fateful sprint.”

She was apparently able to catch two of the three burgers before they hit the ground — but left the double-double behind.

About an hour later, Boehm, an In-N-Out addict from Santa Monica, and his wife Dara Katz, came across the untouched burger.

“It genuinely shook me to my core,” he previously told The Post.

The fast food giant has locations in Arizona, Nevada, Oregon, Utah, Texas and its home state of California — but its closest restaurant is at least 1,500 miles from the Big Apple.

Boehm said he fielded dozens of messages with theories about the case.

Now that he’s solved the mystery, he said he plans to meet the fellow In-N-Out superfan.

“My wife and I have invited Helen and her family over to our apartment for a barbecue,” he wrote. “We’ll probably have hot dogs and chicken.”