Looking for a warm soup on a chilly day? This hearty soup recipe includes kefir, a fermented milk product rich in probiotics. 

1  tbsp vegetable oil

2  cups diced sweet onion

2  cups diced sweet potato

1  cup diced white potato

4  cups reduced-fat chicken broth (or vegetable broth)

Salt and pepper

2  cups plain kefir

2  tbsp chopped chives

1. In a soup pot, heat oil. Add onion and sauté 3-4 minutes.
2. Add sweet and white potatoes and chicken broth; bring to a boil. Then reduce heat and simmer for 25-30 minutes.
3. Puree soup and season with salt and pepper. Whisk in kefir and serve with a sprinkling of chives.

Yields: 6 servings

Source:Lifeway Foods (adapted)