Celebrity chef Jose Andres is leading an effort to deliver thousands of meals to people in need in hurricane-stricken Puerto Rico.

In a video posted to Twitter on Saturday, Andres, a Spanish American chef who became a naturalized citizen in 2013, said his operation was going to deliver 12,000 meals in the U.S. territory throughout the day.

"This is effective and this is working," Andres said in the video about his food delivery operation. The video showed sandwiches and paella, among other meals, being prepared by adults and children.

He also gave a shout out to the mayor of San Juan, Carmen Yulin Cruz, whom Trump has accused of being a bad leader.

"She's doing an amazing, amazing job," Andres said, saying he had delivered a thousand meals to help her efforts and planned even more.

Andres and his World Central Kitchen crew have been in Puerto Rico delivering hundreds and sometimes thousands of meals on a regular basis for days, according to posts on his Twitter account.

Andres also helped out in Houston relief efforts last month.