The company has already signed up its first customers: Dutch private jet operator ASL Group, German business airline Aero-Dienst, and Danish companies Copenhagen AirTaxi and Copenhagen Helicopter.

In a mixer, blend cake mix, 1 cup water, eggs and oil until combined, about 1 minute. Place 24 cupcake liners in pan. Pour cake mix evenly into the 24 cupcake liners. Arrange candied citrus on top.