In a skillet over medium heat, cook the ground beef or turkey until browned. Stir in the taco seasoning and mix well to coat the meat evenly. Remove from heat and set aside to cool.
2. Assemble the Soup Base
In a large pot, combine the broth, black beans, corn, and diced tomatoes. Stir in the cooked protein, ensuring everything is well mixed.
3. Chill the Soup
Allow the soup to cool to room temperature, then transfer it to the refrigerator. Chill for at least 2 hours, or until the soup is completely cold. This step is crucial for melding the flavors.
4. Add Fresh Ingredients
Just before serving, stir in lime juice, chopped cilantro, and green onions. These fresh elements elevate the dish, adding a burst of flavor and aroma.
5. Serve and Garnish
Ladle the soup into bowls and top with your favorite garnishes, such as sour cream, Greek yogurt, or additional cilantro. For a crunch, serve with tortilla chips on the side.