<human>:  What's the best way to prepare onion soup?
<bot>: The best way to prepare onion soup is to begin by sautéing diced onions in a large pot or Dutch oven until they are softened and slightly caramelized. Then add broth or stock and seasonings of your choice and bring the mixture to a boil. Once boiling, reduce the heat and simmer for 15 to 20 minutes or until the onions are fully cooked. Finally, adjust the seasonings to taste and serve. Enjoy!