I updated this recipe and cooked it in the crock pot. The original recipe is here.
Two cups of red potatoes washed and chopped.
Two cups beets peeled and chopped
1 bunch green onions thinly sliced
1 garlic scape thinly sliced
4 cups chicken broth
1 1/2 cups skim milk
1 tablespoon lemon juice
Salt and black pepper to taste
Combine all ingredients except milk, lemon juice and salt and pepper in crock pot. Cook on low for 8 hours. Use blender or immersion blender to puree soup. Add milk, lemon juice and salt and pepper to taste.