When it comes to preparing for a long-duration space trip, forget the Tang; what you really need are some wholesome snacks.

Aspiring astronauts got a glimpse of spaceflyers' snack options when Italian astronaut Samantha Cristoforetti showed off her favorite space snacks in a videorecorded on the International Space Station and released the European Space Agency on April 21.

"Snack time is a great opportunity to put the right kind of rocket fuel in your body," Cristoforetti, the first Italian woman to fly in space, said in the video. "And, as always, don't panic eating healthy is not rocket science."

In the video, she casually grabs dried apples, macadamia nuts, a pumpkin-seed bar and other snacks from a rack in the space station's Node 1 (Unity) module, showing all of them before letting them float away off-camera. (Except for one macadamia nut, which Cristoforetti munched.)

All of these snacks have a long shelf life, which makes sense because astronauts don't have access to refrigeration on board the orbiting lab, and the spaceflyers routinely go months between cargo shipments.

Lastly, Cristoforetti displayed a "very special power bar" made just for her. It includes "plenty of healthy nutritious ingredients" such as nuts, seeds, full-grain cereals and the cyanobacterium spirulina.

Cristoforetti arrived at theInternational Space Station in November. She and fellow Expedition 43 crewmembers Anton Shkaplerov and Terry Virts are scheduled to come back to Earth Wednesday (May 13).

Follow Elizabeth Howell@howellspace, or Space.com@Spacedotcom. We're also onFacebookandGoogle+.Originally published onSpace.com.

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Italian Astronaut Shows Off Space Station's Snack Supply ...