Rock 'N' Roll legend Dave Grohl spent more than 24 hours barbecuing at a Los Angeles homeless shelter to help feed the city's most in need.

The Foo Fighters frontman worked against the rain last week at Hope the Mission's Trebek Center to prepare meals for over 450 people, according to a report.

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Brisket, pork butt, and ribs were on the menu, and the "My Hero" artist worked to trim the fat and prep the meat for the smoker.

"He arrived around 3:00 in the afternoon, and then he was in our kitchen," Grace Ancheta, director of development at Hope the Mission, said. "He was prepping the meat, he was cutting it up, and he was there until he put it in the smoker."

"The meat didn't go into the smoker until midnight that night because he's like, 'Oh, it has to season, and it has to do this,'" Ancheta added. "He's definitely a craftsman when it comes to that, and then he spent the night."

Throughout the night, Grohl and other helpers took turns smoking the meats as hail and rain pelted the shelter, the report noted.

The rocker had arrived at the shelter on Feb. 22 and worked 24 hours until the food was finally ready around 3:00 p.m. on Feb.23, according to the report.

Dinner was served at 6:00 p.m.

"He actually served to our guests, he came out and was very gracious and took pictures with the people that recognized him," Ancheta said regarding Grohl. "He wanted no glory for it, he was like, 'I just want to do this for you guys and give back in that way.'"

Barbecuing is therapeutic for Grohl, he told mission staffers, according to Ancheta.

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"Whenever he comes off of work or anything else, that’s what he wants to do," Ancheta said. "He wants to cook for people."

"And by the way — it was amazing. It’s the best barbecue we've had."