Could Delta replace peanuts as in-flight snack? Aug 16, 2016 Delta Airlines is testing out other snacks and might replace the iconic bag of peanuts with cashews. Delta is based in Atlanta, the capital of the biggest peanut-growing state in the U.S. and has been serving peanuts to passengers since the 1940s. The Georgia Peanut Commission has argued that Delta should continue to serve peanuts because they are more sustainable to grow than other nuts, which also can cause allergic reactions in some travellers. New yogurt bars and Snyder’s brand pretzels are among the new in-flight snacks Delta Air Lines is testing. Delta will be testing the new snacks through Aug. 21 on certain flights out of Atlanta and Minneapolis. The Atlanta Journal-Constitution wrote an article about the snack testing and is polling readers about which they prefer, peanuts or cashews. Click here to go to the newspaper’s blog and cast your vote for Team Peanut.