"There are certain cultures on Earth that have similar customs. I believe the Japanese, have a custom involving a Chilled Watermelon. Though, I am not completely familiar with that." Jeremy explains. Seeing that the Princess was having trouble with the drink, he nods when she asks for a explanation in the working of the Container. "Of Course, Your majesty. May I?" He ask as he holds his hand out for the drink. Taking it he points the the tip of the Straw. On the inside surface, a much smaller straw looking thing could be seen. The opening roughly the size of a pinhole. "The straw works on suction. When You suck on the tip, the vacuum you create in your mouth cause a Diaphragm valve to open in the lid. Thus allowing the Contents to flow up the straw. The Purpose for this is so that if the Cup is knocked over or Gravity is lost. The contents does not escape the container. When you stop sucking, It cause the Diaphragm in the lid to close, drawing the contents of the straw back down into the container as well as expelling any obstructions out of the Vacuum tube." He explained. Jeremy quickly realized that he may have over answered the princess's Question. His cheeks took a bit of a flush in embarrassment. "To simplify, just suck on the end of the straw and the contents will come up." He clarified. "In the Ship's Galley, Food and drink are consumed normally, but any liquid drinks or Food must in such a container outside the Galley. The only other place that Food and drink may be consumed normally outside the Galley is in Your Stateroom, Your majesty." Jeremy explains as he hands back the Container to the Princess.