Can I make this soup ahead of time?
Yes. Prepare through step 6, cool, and refrigerate up to 3 days. Reheat gently over medium-low heat, stirring in cream, nutmeg, and lemon juice just before serving.
What can I substitute for heavy cream?
Use half-and-half, crème fraîche, Greek yogurt, or coconut milk. Adjust quantity to reach desired richness.
Why is my soup grainy instead of smooth?
Ensure your blender is high-powered and blend for several minutes on high. If using a regular blender, work in batches and blend longer. Strain through a fine sieve if needed.
Can I freeze this soup?
Yes, freeze up to 2 months without cream. Thaw overnight in the refrigerator and reheat gently, stirring in fresh cream before serving.
How do I know the vegetables are done roasting?
They should be tender when pierced with a fork and lightly caramelized at the edges after 35–40 minutes at 425°F.