Oden is a type of soup that comes from Japan. It's made by putting lots of different ingredients into a big pot with a special broth. Some of the ingredients are things like boiled eggs, fish cakes, daikon (a type of white radish), and other vegetables.
The broth is usually made from soy sauce and dashi (a type of soup stock made from things like dried fish and seaweed). It's very yummy and has a savory, salty flavor.
Oden is usually eaten in the winter because it's a warm and satisfying soup that helps to keep you cozy. People eat it at home with their families or they can buy it from food stalls on the streets of Japan.
So, Oden is basically a warm and tasty soup that has lots of different yummy things inside. It's perfect for cold nights when you want something comforting and delicious to eat!