This healthful and delicious soup is a great way to start the fall season and to boost your immune system before the cold and flu season starts. I think we can use a little renewal every season, so I make this soup often. It’s loaded with protein, fiber, iron, and vitamin A, and the kale, cauliflower, and broccoli lend important cruciferous power that may protect us from many cancers. The drizzle of organic flax oil brings yet another powerful immune booster, from the omega-3 fatty acids.