The combination of ginger and butternut squash is delicious and addictive. This recipe yields a creamy soup without the use of any cream. I love to whip this soup up with my immersion blender right in the pot. This soup also freezes well. You can serve it with a dollop of sour cream if you desire, although I serve it without a garnish. If you want to make this a completely dairy free soup, use dairy free margarine (Fleishman's unsalted, or Earth Balance.) Oh yeah, and you MUST use fresh ginger.