The best things about cauliflower are that it is naturally creamy. As soon as you blend soup, it gets silky and creamier. You can also use an immersion blender and blend directly in your Instant Pot. Or once it cools down a bit, blend in batches in a high-speed tabletop blender. I have used 1/2 cup of cream in today's creamy cauliflower soup recipe, but you can also add whole milk. If you want to keep your Cauliflower Soup vegan, use coconut milk or almond milk. Cheese is entirely optional.