Remove from heat and in the stockpot, puree the mixture with an immersion blender or transfer the soup to a food processor or blender to blend. Be careful because the soup is very hot. Remember to start blending at a slow speed and increase gradually. The soup should be smooth with some tomato chunks. Season with salt and pepper to taste. You can prepare the soup to this point and refrigerate. When ready to serve, bring to a slow simmer over medium heat. Before serving, stir in 1 tablespoon of ghee. YUM!