
In large stockpot, heat the olive oil over medium heat till shimmering. Add the butter and melt it. Then, add the onion, celery, carrot, and parsnip. Stir briskly for 4-5 minutes. Add the garlic and cook for another minute, continuing to stir the mixture.
To make this soup lactose-free, use lactose-free butter, milk, and cheese.
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