Eino grabbed his gloves and his wand and followed the Professor to... wherever she was taking them. As they continued down the corridor the greenhouse grew a little more humid and Eino could faintly smell a familiar peppermint aroma. When they had reached their destination, Eino paused alongside his classmates and listened as the professor introduced another plant. She revealed it was the famous Peppermint Striped Parasol and when she asked why they were rare and valuable, Eino's hand shot into the air and he jumped up and down in a oh-oh-pick-me-pick-me way. When she called on him he spoke, "They have become rare due to over-harvesting, ever since they became one of the main ingredients for the popular candy, Magic Minty Melts, and since they have become rare they have also grown more valuable." The Ravenclaw in him was satisfied with that answer, and hopefully so was the professor.