Lentil Soup

I'm so happy with how this turned out. It tastes very close to the lentil soup we've loved for years from Sultan's.

1 c chana dal lentils
1 carrot, chopped
1 potato, diced
1 tomato, chopped
5 garlic cloves, minced
2 t cumin
juice of 1 lemon
1 t salt

Wash and drain lentils. Peel and chop vegetables. Add to soup pot and cover with water, about 6-7 cups. Boil until lentils are tender, about 30-40 minutes. Transfer to blender and blend to a smooth consistency. Return to soup pot over low heat and add cumin, lemon juice and salt. Cook until flavors come together, 5 minutes. Serve with a sprinkle of sumac, wedges of lemon, and (optional) sambal olek red pepper sauce.