Delta Air Lines will soon serve Shake Shack cheeseburgers to first-class customers on certain flights out of Boston — including to Atlanta.

The first-class meal option will be offered starting Dec. 1 on routes of more than 900 miles out of Boston Logan International Airport. The airline said it “plans for expansion to other U.S. markets throughout 2025.”

The in-flight ShackBurger will be customizable with toppings like tomato, lettuce and ShackSauce and will be served with chips, a Caesar salad and a dark chocolate brownie.

First-class customers will be able to order the Shake Shack cheeseburger in advance through the Delta app or a link in their email up to seven days before departure.

Securities and Exchange Commission Chair Gary Gensler, who was aggressive in his oversight of cryptocurrencies and other financial markets, will step down from his post on Jan. 20.

Gensler pushed changes that he said protected investors, but the industry and many Republicans bristled at what they saw as overreach. President-elect Donald Trump had promised during his campaign that he would remove Gensler.

Gensler emerged a crypto skeptic early in his tenure.

“This asset class is rife with fraud, scams, and abuse in certain applications,” he said in a speech at the Aspen Security Forum in 2021. “There’s a great deal of hype and spin about how crypto assets work. In many cases, investors aren’t able to get rigorous, balanced, and complete information.”

Bitcoin has jumped 40% since Trump’s victory. It hit new highs Thursday and was nearing $100,000. Bitcoin moved notably higher still after Gensler’s resignation was announced.