Leonardo DiCaprio, like the man he portrays in his new film “The Revenant,” overcame adversity — including eating raw bison liver — to bring his role as an 1820s fur trapper to life.

The actor remarked of his work on Alejandro González Iárritu’s survival epic, “I can name 30 or 40 sequences that were some of the most difficult things I’ve ever had to do. Whether it’s going in and out of frozen rivers, or sleeping in animal carcasses, or what I ate on set,” she says. And now, in a new interview, the three-time Oscar nominee reveals why he ate an uncooked animal organ when the rumored $135 million drama had plenty of money to make a fake.

DiCaprio discussed eating raw bison with Variety over “several glasses of wine,” going into graphic detail about the performance.

“The bad part is the membrane around it,” he said. “It’s like a balloon. When you bite into it, it bursts in your mouth.”

While eating raw liver was a low point, the filming of The Revenant, which is based on the true story of fur trader Hugh Glass, is gruesome enough to go down in Hollywood history.

Leonardo described how he learned to “fire a musket, build a fire, speak two Native American languages (Pawnee and Arikara) and study with a doctor who specialises in ancient healing techniques” for the most difficult performance of his career.

“It was like the real wild, wild West in the sense that there were all these cultures merging together in this lawless land.

Filming in temperatures as low as 40 degrees below zero, sitting in a makeup chair for up to five hours while 47 different prosthetics were applied to look like bloody wounds, and shooting an intricate stunt sequence involving a bear attack during a torrential rainstorm were just a few of the challenges on set.

“I got the flu quite a few times,” the star of “Wolf of Wall Street” said.

He also had to put up with a lengthy, scraggly beard for a lot longer than he wanted.

The actor remarked, “I had that beard for a year and a half. It becomes like a spouse. You sleep with it. It was like shaving off dreads.”

The film will be released in theaters on January 15, 2016.