Sales of macadamia nuts soar in South Korea after Korean Air executive's nut rage

South Korean online retailers say demand for macadamia nuts has skyrocketed after a Korean Air Lines executive delayed a plane over an incident now dubbed "nut rage."

Auction, a South Korean unit of eBay, said Monday that sales of macadamias surged nearly 1,200 percent during the five days to Sunday without any sales promotions. The website of e-commerce firm Coupang showed Mauna Loa macadamia nuts were out of stock.

Cho Hyun-ah, the daughter of Korean Air's chairman, forced a flight attendant off a Dec. 5 flight after she was served bagged macadamia nuts, not on a plate.

She resigned from executive roles including head of cabin service amid a storm of criticism.

Cho's over-mighty behavior hogged headlines in local media and spawned parodies on the Internet in the past week.