Heat a large soup pot over medium heat. Add 1/2 cup of broth and sausage. Break sausage apart as it browns.

While sausage cooks, add 2 cans of beans and 1 cup of broth to a blender. Blend well until smooth.

Once sausage is almost fully cooked (about 10 minutes), add onion and celery, salt and pepper. Mix well and sauté for 5-7 minutes, until onions and celery are softened.

Add remaining broth and bring to a simmer. Add the kale and let steam until wilted.

Add beans, bean puree, and the white wine vinegar. Add salt and pepper as needed. Mix well until heated through, then serve.