Creamy Turnip and Parsnip Soup

Over the holidays my husband insisted that I make Emeril's turnip soup (from the Farm to Fork cookbook) for my in-laws. Unfortunately, the cookbook was home and I was not. But Emeril's website came through with this version -- not identical to the other version -- but still quite tasty. I wasn't able to find the very young turnips that I used in the other version, and I expect that the more mature turnips I used here were responsible for the slightly bitter undertaste of the soup. Nonetheless, both my in-laws and my pre-teen niece pronounced this version to be "awesome."