Place the carrots, stock, shallots and salt into the Vitamix or an industrial blender. Turn blender on and slowly increase to the highest setting. Blend for 4 to 5 minutes, or until warm.
Add the ginger and butter and continue to blend for one minute, or until the butter is melted. Add the cream and lemon juice. Continue to blend for 3-4 minutes, or until the soup is warm to the touch.
Ladle the soup into serving bowls. Top with lemon zest, green apple, basil and pistachios.