Mohnnudeln, also known as poppy seed noodles, are a unique and delicious dish that is popular in Vienna. They are made with cooked noodles tossed in a sweet poppy seed mixture, which is typically made with ground poppy seeds, sugar, and butter. The dish is often served as a dessert or a sweet main course. Mohnnudeln have a distinct nutty flavor from the poppy seeds and are a delightful treat for those with a sweet tooth.