Ramen is a soup made from a soup stock along with alkaline noodles. The soup stock can be pork-based, miso-based, or soy-based. It is possible to find vegetarian ramen now as well. In addition to the broth and noodles, there are often other ingredients in the soup, including vegetables, tempura, mushrooms, or pieces of meat. Many of the items depending on the region in Japan where it is eaten.